KR20010110749A - Personal identification device - Google Patents

Abstract

The present invention relates to a personal identification device using at least one fingerprint. The apparatus includes at least one light source for illuminating and / or projecting the front of the finger and at least one fiber optic finger rest for recording an optical image of the fingerprint. This fingerrest is used to receive an optical image of the fingerprint. The optical image can be converted into an electrical signal at the sensor device. Ambient light is provided as the main light source.

Description

Personal Identification Device {PERSONAL IDENTIFICATION DEVICE}

The invention comprises at least one light source for illuminating and / or transilluminating the front of the finger, and at least one fiber-optic finger rest for recording an optical image of the fingerprint, A personal identification device using at least one fingerprint for transmitting the optical image to at least one sensor device capable of converting the optical image into an electrical signal by the finger rest.

Devices of the kind described in PCT / WO 98/27509 record and process fingerprints and identify individuals, such as computer technology, admission systems, criminology, medicine, and protection systems, as well as banking and finance. It can be used in all fields that are required.

A common feature of such a system is that the finger is placed between the light source and the finger rest by having at least one light source located above the finger to be projected. The light irradiated by the light source passes through the front part of the finger to record information on the fingerprint, and then is transmitted to a sensor device capable of converting an optical image located below the finger rest into an electrical signal through an optical fiber of the finger rest.

In the so-called direct optical method as described above, there is a problem that a person to be identified by a fingerprint must put a finger in question in the space or hole between the light source and the finger rest. This is very bad from a psychological point of view and can be anxious because the person to identify must put an exposed part of his or her body into an invisible hole, such as the tip of a finger, which is very bad from a psychological point of view and resistance to using such a device. There is a problem to increase.

It is an object of the present invention to provide a personal identification device capable of illuminating and / or projecting the tip of a finger with sufficient reliability. The personal identification device can not only reliably visually confirm the person to be identified, but also can clearly understand the identification process.

The object of the present invention described above is achieved by a device by the preamble of the claims of the present invention in which ambient light is provided as a primary light source.

The "ambient light" includes both natural light, such as sunlight, and light from artificial light, not specifically provided for the device of the invention, such as indoor lighting or street lamps.

The ambient light can be illuminated and / or projected from the opposite side of the finger rest according to a preferred embodiment of the present invention by sufficiently illuminating and / or projecting the front of the finger. In addition, the present invention is based, to some extent, on transmitted light technology, wherein the optical image of the fingerprint is processed as a transmitted light image.

Since the front part of the finger with the protruding lines is placed on the finger rest during the personal identification process, the protruding lines block the input area of the optical fiber of the finger rest. Therefore, in this part, the transmitted light scattered into the finger hardly reaches the finger rest.

In the region corresponding to the recesses between the protruding lines, the scattered light is inputted to the optical fiber of the finger rest more and is applied to the sensor device through the finger rest so that it is based on the fingerprint, in particular the protruding lines and the like. A very sensitive device for personal identification using the lumen between these lines is obtained.

The optical image of the recorded fingerprint passes through the optical fiber of the finger rest and is input to a sensor device capable of converting the optical image into an electrical signal.

The device of the present invention is a device of the present invention because the person to be identified only needs to place his or her fingertips psychologically and comfortably on the finger rest, as in a conventional device (see PCT / WO 98/27509), without psychological comfort. And it is particularly important that the personal identification process by this device can be fully understood by the user.

In addition, an important optical feature of the device of the present invention lies in the design of a complete "life support" system. In other words, the device of the present invention is based on the projection-shaped lines and the area between them. In addition, according to the present invention, it is possible to observe or investigate whether an illuminated object such as the front of the finger is alive or not, that is, whether blood is flowing or the pulse is beating.

Therefore, the present invention can be used to identify the user only when the current pulse rate rises or falls within 10% based on the stored pulse rate. Therefore, pulse rate is another standard for personal identification. This additional biometric data related to the pulse reduces the possibility of errors in the identification process by allowing the person's living finger to be distinguished from the fingerprint of the previously taken finger. Using data on changes in the permeability of the front of the finger, the pulse of the person to be identified can be determined by the computer, and the resulting transmittance curve can be used similarly to the electrocardiogram (EKG) used for medical purposes.

It may be advantageous that the main light source, i.e., the ambient light, is not one light source under certain conditions, which may be determined by external factors such as diffuse lighting conditions and the arrangement, function and / or use of the device of the invention.

Accordingly, according to the identification device of the present invention, at least one artificial light source can be connected as a second light source positioned next to the finger rest. The light of this second light source is irradiated in the lateral direction of the finger rest and reflected from the sensor device to provide where the front part of the finger rests.

Although the second light source is located next to the finger rest and the light from the second light source is irradiated to the finger rest surface provided to support the front part of the finger facing the opposite side of the sensor device, it is sufficient to illuminate and / or project the front part of the finger. The object of the invention can be achieved.

This is possible because the second light strikes mainly on the side of the front of the finger and at least a portion of the second light penetrates into and scatters inside the front of the finger and this scattering occurs in all directions including the direction of the fiber optic finger rest. (The so-called transmitted light technique, ie the optical image of the fingerprint is processed as a transmitted light image.)

According to a preferred embodiment of the present invention, the second light source is located on the side of the fingerrest facing the sensor device. Light from the second light source is irradiated toward the face of the finger rest provided for supporting the front of the finger facing away from the sensor device. In other words, the fingertip of the person to be identified is irradiated from the bottom to the side.

In addition, the second light source may be located away from the sensor device in the lateral direction. This structural separation of the second light source and the sensor device is proposed only when the light is integrated into the sensor device from the second light source and the identification device does not operate normally. Otherwise, only the second light is incident on the sensor device and operated by the silicon, which is previously scattered into the front of the finger and has information about the projection lines, that is, the fingerprint.

According to a preferred embodiment of the present invention, the light from the second light source can be irradiated laterally to the finger rest surface provided for supporting the front portion of the finger facing away from the sensor device. This configuration is particularly contemplated when the second light source is located on the opposite side of the sensor device. In addition, the second light source may be positioned below the finger rest so that the light is flatly irradiated on the front part of the finger.

The second light source can be designed as a light pulse source designed to irradiate light pulses. The pulse duration of the irradiated light pulse is preferably about 1 msec. Accordingly, the apparatus according to the present invention may have at least one pulse device for controlling the second light source. This pulse device is preferably located between the second light source and at least one control device for the sensor device.

According to a preferred embodiment of the present invention, there is provided a display device for displaying various operating states of a device in order to inform the person to be identified which operating state. The display is at least one monochromatic or multicolored light that indicates various operating states of the identification device (e.g., green light: device is ready for personal identification, red light: device is not ready for personal identification). Has a display.

When the device of the present invention is particularly designed to be refined and compact, the display device may be integrated with the second light source, or the display device and the second light source may be designed identically.

According to the personal identification device of the present invention, the second light source has at least one optical system associated with it. Such optical systems have specific protection. In other words, the optical system prevents the person to be identified by the fingerprint from touching the second light source by placing a finger on a sensitive and easily damaged area.

However, a preferred model of the optical system deflects light from the second light source onto the fingerrest facing away from the sensor device and diffuses and distributes the light emitted by the second light source onto the fingerrest facing away from the sensor device. It is designed to.

Uniform illumination of the front of the finger ensures an optical image of the fingerprint from this area. This is important for ensuring the operation of the device according to the invention.

The optical system has the form of at least one lens, at least one prism, at least one lightguide and at least one lightguide component and / or at least one mirror. The optical components are used depending on the space available or the degree of illumination desired.

In order to distribute the light and to perform the above protective function, it is preferable to select plastic as the material of the optical system. Plastics are economical and robust materials that ensure optical properties, especially in transmission mode.

In order to perform the above-mentioned protective function, at least the side surface of the optical system that does not face the second light source is preferably coated with a light transmitting material. This protects the sensitive optical system from scratching and / or contamination and facilitates cleaning of the optical system by coating the light transmissive material.

It is also desirable to coat the fingerrests facing away from the sensor device with a light transmissive material. It is important to coat the finger rest as described above in that a clean and undamaged finger rest is required for proper operation of the identification device of the present invention.

In both cases of the optical system and the finger rest, the light transmissive material is painted by one embodiment of the present invention.

As described above, at least one second light source performs an important function in the configuration of the present invention. It should be noted that more than one second light source may be provided in most practical applications for uniform illumination of the front of the finger. For example, two or four second light sources may be arranged symmetrically, horizontally or circularly about the sensor device.

In this case, it is advantageous that the second light source is a light emitting diode (LED). The advantage of the light emitting diode is that its size is so small that it can be used even when the device of the present invention is small. Another advantage is the light, robust, low operating voltage and long life.

According to a preferred embodiment of the present invention, the second light source emits infrared light. This infrared light has a wavelength of about 950 nm, for example. The second light source itself should have a power of about 25mw to avoid the relatively high heat dissipated from the identification device.

In order to provide a certain level of stability to the personal identification device of the present invention, the sensor device is preferably mounted on a carrier device. This carrier device can be mounted on a PC board device.

The optical fibers in the finger rest according to the present invention must be arranged in parallel so as to properly transmit the light having the optical image of the fingerprint coming from the front of the finger to the sensor device through the finger rest.

The optical fibers in the finger rest according to the present invention may have two directions arranged at angles of each other. According to a preferred embodiment, the optical fibers of the finger rests are arranged in layers. The optical fibers in this light layer are arranged parallel to each other and the optical fibers in adjacent layers have an angle of α with respect to each other.

In the above-described preferred embodiment, the optical fibers of the finger rests arranged in one direction at an angle of α with respect to the other direction transmit light to the finger rests facing away from the sensor device, Optical fibers deliver an optical image of the fingerprint to the sensor device.

When the optical fibers are arranged in two directions as described above, the optical system may be omitted if uniform illumination of the front of the finger is ensured by the optical fibers of the other direction arranged at an angle with respect to the optical fibers in one direction.

The finger rest can be extended independently from the viewpoint of omission of the optical system. That is, the second light source is protected from people's hands by extending the finger rest to the area above the second light source.

Since only light having information about the optical image of the fingerprint is transmitted to the sensor device, that is, the light is scattered by the front of the finger, it is desirable to provide a barrier layer in the finger rest that does not transmit light. This barrier layer prevents light from the second light source from being transmitted directly to the sensor device. That is, the light is not scattered in front of the finger. The barrier layer can be made, for example, in the form of a closed optical fiber.

At least one barrier layer that does not transmit light may be provided in the finger rest. The barrier layer may be provided between the second light source and the sensor device.

Materials in the barrier layer that do not transmit light can, for example, be painted.

The sensor device may be a structure based on CMOS technology or a circuit based on CMOS technology.

At least one charge-coupled structure element or at least one charge coupled device (CCD = charge coupled device) may be provided as the sensor device. The device may be at least one two-region CCD that acts as a photodetector and does not have a special area protected from light.

DETAILED DESCRIPTION Hereinafter, embodiments, features, and advantages of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing a first embodiment of a personal identification device according to the present invention.

Figure 2 shows a second embodiment of a personal identification device according to the present invention.

Fig. 3A shows a third embodiment of a personal identification device according to the present invention.

FIG. 3B illustrates a finger rest portion of the personal identification device of FIG. 3A.

3C is a partial elevation view of the finger rest portion of FIG. 3B.

1 to 3C the same components of the device according to the invention are shown with the same reference numerals.

Three embodiments of the personal identification device using at least one fingerprint shown in Figs. 1 to 3A are processing by inputting a fingerprint, including computer technology including all fields requiring personal identification, such as banking and finance. It can be used in the field of admission system, criminology, medicine and protection system.

Three embodiments of the personal identification device using the at least one fingerprint shown in Figs. 1 to 3A show that the lighting and / or projection of the front of the finger is sufficiently reliable, the personal identification device can be seen and the personal identification process The user can understand this feature.

This is achieved by the fact that ambient light is provided as the main light source in embodiments of the personal identification device using at least one fingerprint shown in Figs.

The term "ambient light" includes both light from natural light sources such as sunlight and light from artificial light sources not specifically provided for the device according to the invention, such as indoor lighting or street lamps, for example.

The ambient light illuminates and / or projects the front of the finger, and the front of the finger is illuminated and / or projected by the optical fiber of the finger rest 30 to provide a sufficiently reliable result of recording an optical image of the fingerprint. The present invention is based, to some extent, on transmitted light technology, in which the optical image of the fingerprint is treated as a transmitted light image.

In the personal identification process, when the surface of the front of the finger with the projection-like lines is placed on the finger rest 30, the projection-shaped lines "protrude" by closing the input of the optical fibers 310 of the finger rest 30. In this region, which is closed by the lines of, the transmitted light scattered inside the front of the finger hardly reaches the finger rest 30.

On the other hand, in the recessed area between the protruding lines, the scattered light enters the optical fibers 310 of the finger rest 30 more and passes through the finger rest 30 to be transmitted to the sensor device 40. This provides a highly sensitive device for personal identification using a fingerprint based on the area of the projection lines and the area between the projection lines.

Therefore, the optical image of the recorded fingerprint passes through the optical fibers 310 of the finger rest 30 to the sensor device 40 connected with the finger rest 30, and then by the evaluation device connected with the sensor device 40. Analyzed and processed.

On the basis of the difference in brightness between the areas of the protruding lines and the areas between the protruding lines, the invention shown in FIGS. 1 to 3C shows whether an illuminated object, for example, the front of a finger, is alive or in other words, It may be determined whether blood is pulsating or pulses ("life sustained").

1 to 3C, the person can be authenticated or identified unless the person's actual pulse rate is more than 10% above and below the stored pulse rate. Pulse rate is thus an additional criterion for personal identification.

This additional biometric data related to the pulse allows the identification of the person's finger and the previously recorded living finger of the person to be distinguished from the fingerprints of the previously taken finger. Reduce the likelihood of errors Using data on changes in the permeability of the front of the finger, the pulse of the person to be identified can be determined by the computer, and the resulting transmittance curve can be used in the same way as an electrocardiogram (EKG) used for medical purposes.

The device according to the invention shown in the embodiments of Figs. 1 to 3A is completely transparent and the user is able to personally identify it because the person to be identified simply puts it on the finger rest in a psychologically stable state without inserting his fingertip into the hole. The process can be clearly understood.

It may be advantageous that the main light source, i.e., ambient light, is not one light source under certain conditions determined by external factors such as, for example, diffuse lighting conditions and the arrangement, function and / or use of the device according to the invention.

Accordingly, in the identification device of the present invention shown in FIGS. 1 to 3A, two artificial light sources symmetrically with respect to the sensor device 40 are connected as the second light source 10 positioned on the side of the finger rest 30. To illuminate the front of the finger. The light of the second light source is directed toward the opposite side of the sensor device 40 and may be irradiated in the direction of the finger rest surface provided to support the front part of the finger.

The second light source 10 is located on the side of the finger rest 30 and the light from the second light source faces the opposite side of the sensor device 40 and in the direction of the face of the finger rest 30 provided to support the front of the finger. Although irradiated, the front of the finger can be illuminated and / or projected with sufficient reliability.

As the second light falls from the side to the front of the finger, at least a portion of the light penetrates into and scatters inside the front of the finger, which scattering takes place in all directions, including the direction of the fiber optic finger rest 30. The transmitted light technique, i.e. the optical image of the fingerprint, is processed as a transmitted light image.)

The optical image of the fingerprint is transmitted to the sensor device 40 by the finger rest 30, where the optical image of the fingerprint is converted into an electrical signal. The sensor device 40 is mounted on the carrier device 50, and the carrier device 50 is mounted on the PC board device 60.

In the first and second embodiments of the invention shown in FIGS. 1 and 2, an optical system 20 made of plastic designed as a lens is connected with the second light source 10. This optical system 20 has a specific protective function. That is, the optical system 20 prevents the person to be identified by the fingerprint from touching the front part of his finger to the second light source 10 which is sensitive and easily damaged.

The optical system 20 is designed such that the light irradiated from the second light source 10 is deflected toward the finger support surface facing away from the sensor device 40, and the light irradiated by the second light source 10 is transmitted to the sensor device. It is dispensed so as to spread on the finger rest surface facing the opposite side of 40.

Accordingly, the front part of the finger can be uniformly illuminated to obtain an optical image of the fingerprint from the front part of the finger. This is important to ensure the operation of the device according to the invention.

The second embodiment shown in FIG. 2 differs from the first embodiment shown in FIG. 1 in that the second light source 10 is located on the finger rest surface facing the sensor device 40. In FIG. 2, the second light source 10 is positioned under the finger rest 30. This is a sufficient precondition for the light from the second light source 10 to be irradiated to the surface for supporting the front part of the finger in the finger rest 30. In other words, the front of the finger of the person to be identified is irradiated from the bottom to the side.

Further, in the third embodiment, the second light source 10 is located away from the sensor device in the lateral direction. The structural separation of the second light source 10 and the sensor device 40 is to prevent the light from being directly transmitted from the second light source 10 to the sensor device 40 for the proper operation of the device of the present invention. It is advantageous to Accordingly, only light scattered inside the front part of the finger is incident on the sensor device 40, and the light has projection lines, that is, information about a fingerprint.

The first and second embodiments shown in FIGS. 1 and 3 provide the fingerrest 30 to properly transmit light with an optical image of the fingerprint coming from the front of the finger to the sensor device 40 through the finger rest 30. 3 is different from the third embodiment shown in FIG. 3 in that the optical fibers 310 of FIG.

The optical fibers 310 and 320 in the finger rest 30 of the third embodiment (see FIGS. 3A, 3B and 3C) have two directions at an angle of about 45 °. The optical fibers 310, 320 of the finger rest 30 are located parallel to each other in one layer, and the optical fibers 310, 320 of adjacent layers have an angle of about 45 ° with respect to each other.

In a third embodiment (see FIGS. 3A, 3B, 3C), the optical fibers 320 are arranged with 45 ° relative to the other direction of the finger rest 30 and sensor the light from the second light source 10. Pass the finger rest toward the opposite side of the 40. The optical fibers 310 arranged in the other direction of the finger rest transmit the optical image of the fingerprint to the sensor device 40.

According to the embodiment shown in FIGS. 3A, 3B, 3C with two preferred directions for the optical fibers 310, 320, the optical fibers 320 of the finger rest 30 are arranged at an angle of 45 ° to another direction. The optical system 20 according to FIGS. 1 and 2 may be omitted as long as uniform illumination of the front of the finger can be ensured.

Apart from omitting the optical system 20, the finger rest 30 may extend to the upper region of the second light source 10 to prevent the user's hand from reaching the second light source. (See Figures 2 and 3A)

Since only the light having information on the optical image of the fingerprint scattered by the front of the finger reaches the sensor device 40, in the second embodiment of the present invention shown in FIG. 2, two barriers are provided inside the finger rest 30. Layer 130 is provided. This barrier layer does not transmit light from the second light source 10. The barrier layer 130 prevents light from the second light source 10 from being transmitted directly to the sensor device 10 without being scattered at the front of the finger.

The two barrier layers 140 serve the same purpose as the barrier layer 130 in the finger rest 30 (see FIG. 2). The barrier layer 140 is provided in all three embodiments shown in FIGS. 1 to 3A, and is provided between the second light source 10 and the sensor device 40. This barrier layer also does not transmit light from the second light source 10.

Claims (43)

The optical image can be transmitted to at least one light source 10 for illuminating and / or projecting the front of the finger, and a sensor device 40 capable of recording an optical image of the fingerprint and converting the optical image into an electrical signal. A personal identification device using at least one fingerprint having at least one optical fiber fingerrest (30), wherein the ambient light is provided as a main light source. The personal identification device according to claim 1, wherein the front part of the finger can be illuminated and / or projected from a surface facing the finger rest (30). The personal identification device according to claim 1, wherein at least one artificial light source can be connected as a second light source. 4. The personal identification device according to claim 3, wherein the second light source is located on the side of the finger rest (30). An individual according to claim 3 or 4, characterized in that the light from the second light source (10) can be irradiated in the direction of the finger rest on which the front of the finger facing away from the sensor (40) is placed. Identification device. 6. A personal identification device according to claim 3, wherein the second light source (10) is located on a finger support surface facing the sensor device (40). 7. A personal identification device according to claim 3, wherein the second light source is located away from the sensor device in the lateral direction. 8. The light source of claim 3, wherein the light from the second light source 10 can be irradiated transversely to the finger rest surface on which the front of the finger facing away from the sensor 40 is placed. 9. Personal identification device, characterized in that. Personal identification device according to claim 3, characterized in that the second light source (10) is designed as a light pulse source. 10. The apparatus of claim 9, wherein the second light source (10) is designed to irradiate light pulses having a pulse length of about 1 msec. 11. A personal identification device according to claim 9 or 10, wherein at least one pulse device is provided for controlling the second light source (10). 12. A personal identification device according to any one of claims 1 to 11, wherein a display device is provided for displaying various operating states of the device. The personal identification device according to claim 12, wherein the display device has at least one monochromatic or multicolor display for informing various operation states of the device. The personal identification device according to claim 12 or 13, wherein the display device is integrated in the second light source (10), and the display device and the second light source are designed identically. 15. A personal identification device according to any one of claims 3 to 14, characterized in that the second light source (10) is located below the at least one optical system (20). The optical system (20) of claim 15, wherein the optical system (20) deflects (or) directs the light emitted from the second light source (10) to the finger rest facing away from the sensor device (40). Is distributed so that the light irradiated by the second light source (10) is diffused on the finger support surface facing away from the sensor device (40). The optical system of claim 15, wherein the optical system 20 is in the form of at least one lens, at least one prism, at least one light pipe, at least one light guide component and / or at least one mirror. Personal identification device characterized in that it has. 18. An apparatus according to claim 15, wherein the optical system is made of plastic. 19. A personal identification device according to any one of claims 15 to 18, wherein the face of the optical system (20) facing at least opposite the second light source (10) is coated with a light transmissive material. 20. A personal identification device according to any one of the preceding claims, wherein at least the finger rest facing away from the sensor device (40) is coated with a light transmissive material. 21. The personal identification device of claim 19 or 20, wherein the light transmissive material is paint. 22. A personal identification device according to any one of claims 3 to 21, wherein said second light source (10) is a light emitting diode (LED). 23. The personal identification device according to claim 3, wherein the second light source (10) emits infrared light. 24. The apparatus of claim 23, wherein the infrared light has a wavelength of about 950 nm. 25. A personal identification device according to any one of claims 3 to 24, wherein said second light source (10) has a power of about 25 mW. 26. A personal identification device according to one of the preceding claims, characterized in that the sensor device (40) is mounted on a carrier device (50). 27. The personal identification device according to claim 26, wherein the carrier device (50) is mounted on a PC board device (60). 28. A personal identification device according to any one of the preceding claims, characterized in that the optical fibers (310) in the finger rest (30) are arranged parallel to each other. 28. A personal identification device according to any one of the preceding claims, characterized in that the optical fibers (310,320) in the finger rest (30) have two directions arranged with a predetermined angle [alpha] relative to each other. . 30. The optical fibers 310, 320 in the finger rest 30 are arranged in several layers, such that the optical fibers 310, 320 are arranged parallel to one another in one layer, and the optical fibers 310,320 of adjacent layers are Personal identification device characterized by forming a predetermined angle (α) with respect to each other. 31. The optical fiber 320 of the finger rest 30 arranged in one direction forming a predetermined angle α with respect to the other direction is the finger rest facing away from the sensor device 40. 30, and the optical fibers 310 of the finger rests arranged in the other direction transmit the optical image of the fingerprint to the sensor device. 32. A personal identification device according to one of the claims 3 to 31, characterized in that the finger rest (30) has an extension extending up to an upper region of the second light source (10). 33. A personal identification device according to one of the preceding claims, characterized in that at least one non-transmissive barrier layer (130) is provided in the finger rest (30). 34. The apparatus of claim 33, wherein the barrier layer (130) is formed in the form of a closed optical fiber (310). 35. A personal identification device according to any one of claims 3 to 34, wherein at least one non-transmissive barrier layer (140) is provided between the second light source (10) and the sensor device (40). 36. The apparatus of claim 33 or 35, wherein the material of the barrier layer (130,140) that does not transmit light is paint. 37. A personal identification device according to any one of claims 3 to 36, wherein at least one second light source (10) is provided. A personal identification device according to claim 37, wherein the second light source is arranged transversely or circularly about the sensor device (40). 39. A personal identification device according to any one of the preceding claims, wherein said sensor device (40) is operated by silicon. 40. A personal identification device according to any one of the preceding claims, wherein said sensor device (40) has at least one structural component based on CMOS technology or at least one circuit based on CMOS technology. 41. The sensor device of claim 1, wherein the sensor device 40 has at least one charge-coupled structural component or at least one charge coupled circuit (CCD). Personal Identification Device. 42. A personal identification device according to any one of the preceding claims, wherein the device is designed for life support. 43. A personal identification device according to claim 1, wherein the sensor device has at least one evaluation device connected thereto.