FR3107156A1 - Vehicle control method and system - Google Patents

Abstract

The invention relates to a device and a method for controlling a vehicle (10), for example for access and / or starting control. To this end, a first authentication of an authentication device detected by a first near-field communication reader (101) arranged outside the vehicle cabin is implemented. When the authentication device is correctly authenticated via the first reader, one or more doors (102) of the vehicle (10) are unlocked. A second authentication of the authentication device is then implemented, which device is detected by a second near-field communication reader arranged inside the vehicle cabin. When the authentication device is correctly authenticated via the second reader, one or more vehicle starting devices are activated or powered on. Figure for the abstract: Figure 1

Description

Vehicle control method and system

The invention relates to a method and a system for controlling a vehicle, in particular of the automobile type. The invention also relates to a method and a system for controlling the access and / or use of the vehicle.

Technological background

It is now known practice to mount a near-field communication reader in an opening, for example the driver's front door, for example at the level of the door handle. Such a reader makes it possible to authenticate a user who wears a communication device capable of transmitting an identifier to the reader using near-field communication technology. Once the authentication is successful, the unlocking of the opening is implemented, allowing the user to board the vehicle.

However, such a system allowing the unlocking of a vehicle opening can be bypassed by a malicious individual, who can for example break the window of the opening to enter the vehicle and then use it.

An object of the present invention is to improve the security of a vehicle, for example against theft.

According to a first aspect, the invention relates to a method of controlling a vehicle, the vehicle comprising a first near-field communication reader arranged outside a passenger compartment of the vehicle and a second near-field communication reader arranged inside the passenger compartment of the vehicle, the method comprising the following steps:

- first authentication of an authentication device detected by the first near-field communication reader;

- unlocking at least one vehicle opening according to the first authentication;

- second authentication of the authentication device detected by the second near-field communication reader;

- control of at least one vehicle starting device according to the second authentication.

According to a variant, the first authentication comprises a reception of an identifier by the first near-field communication reader according to a short-range and high-frequency wireless link and the second authentication comprises a reception of the identifier according to a wireless link. short-range and high-frequency wire by the second near-field communication reader, the identifier being stored in the memory of the authentication device.

According to another variant, the method further comprises a step of comparing the identifier with a list of authorized identifiers, the authentication device being authenticated by the first reader and by the second reader when the identifier is part of the listing.

According to a further variant, said second identification is implemented when said authentication device is arranged in a housing of said second near-field communication reader configured to receive said authentication device.

According to yet another variant, the method further comprises the following steps:

- detection of a withdrawal of the home authentication device, causing at least one starter device to stop; then

- detection of the authentication device by the first near-field communication reader, causing the vehicle to be locked and a set of motor functions of the vehicle with the exception of the first reader to be turned off.

According to a further variant, the removal of the housing authentication device is permitted when at least one condition of use of the vehicle is verified and the detection leads to an end of a vehicle rental service.

According to a second aspect, the invention relates to a device configured to control a vehicle, the vehicle comprising a first near-field communication reader arranged outside a passenger compartment of the vehicle and a second near-field communication reader arranged at inside the passenger compartment of the vehicle, the device comprising a memory associated with a processor configured for implementing the steps of the method according to the first aspect of the invention.

According to a third aspect, the invention relates to a system comprising a device as described above according to the second aspect of the invention, a first near-field communication reader arranged outside a passenger compartment of the vehicle and a second near-field communication reader arranged inside the passenger compartment of the vehicle, the first reader and the second reader being connected to the device via at least one wire link.

According to a fourth aspect, the invention relates to a vehicle, for example of the automobile type, comprising a device as described above according to the second aspect of the invention or a system as described above according to the third aspect of the invention. 'invention.

According to a fifth aspect, the invention relates to a computer program which comprises instructions adapted for the execution of the steps of the method according to the first aspect of the invention, this in particular when the computer program is executed by at least one. processor.

Such a computer program can use any programming language, and be in the form of a source code, an object code, or an intermediate code between a source code and an object code, such as in a partially compiled form, or in any other desirable form.

According to a sixth aspect, the invention relates to a recording medium readable by a computer on which is recorded a computer program comprising instructions for carrying out the steps of the method according to the first aspect of the invention.

On the one hand, the recording medium can be any entity or device capable of storing the program. For example, the medium may comprise a storage means, such as a ROM memory, a CD-ROM or a ROM memory of the microelectronic circuit type, or else a magnetic recording means or a hard disk.

On the other hand, this recording medium can also be a transmissible medium such as an electrical or optical signal, such a signal being able to be conveyed via an electrical or optical cable, by conventional or hertzian radio or by self-directed laser beam or by other ways. The computer program according to the invention can in particular be downloaded over an Internet-type network.

Alternatively, the recording medium can be an integrated circuit in which the computer program is incorporated, the integrated circuit being adapted to execute or to be used in the execution of the method in question.

Brief description of the figures

Other characteristics and advantages of the invention will emerge from the description of the non-limiting embodiments of the invention below, with reference to Figures 1 to 4 attached, in which:

schematically illustrates a vehicle comprising a first near-field communication reader, according to a particular embodiment of the present invention;

schematically illustrates a passenger compartment of the vehicle of FIG. 1 comprising a second near-field communication reader, according to a particular embodiment of the present invention.

schematically illustrates a device configured to control access to the vehicle of FIG. 1, according to a particular embodiment of the present invention;

illustrates a flowchart of the various steps of a method for controlling access to the vehicle in FIG. 1, according to a particular embodiment of the present invention.

A method and a device for controlling a vehicle, for example for controlling access to the vehicle, will now be described in what follows with reference in conjunction with FIGS. 1 to 4. The same elements are identified with the same symbols. reference throughout the description which follows.

According to a particular and non-limiting example of an embodiment of the invention, a method for controlling a vehicle, for example for access and / or starting control, comprises a first authentication of an authentication device (for example a device configured to store an identifier), which is detected by a first near-field communication reader arranged outside the passenger compartment of the vehicle, for example outside the vehicle on an opening of the vehicle. When the authentication device is correctly authenticated via the first reader, one or more vehicle doors are unlocked. A second authentication of the authentication device is then implemented, which device is detected by a second near-field communication reader arranged inside the vehicle cabin. When the authentication device is correctly authenticated via the second reader, one or more vehicle starting devices are controlled, that is to say activated or powered on.

Double authentication of the authentication device by consecutively a first near-field communication reader and a second near-field communication reader significantly improves vehicle security. Thus, even if a malicious person succeeds in entering the vehicle without implementing the first authentication, the latter is confronted with a second authentication via a second reader which prevents any starting of the vehicle if the person is not wearing the device. authentication comprising the ad hoc identifier allowing authentication.

schematically illustrates the exterior of a vehicle 10, according to a particular and non-limiting exemplary embodiment of the present invention.

The vehicle 10 corresponds for example to a motor vehicle, for example a vehicle with a heat engine, an electric motor or a hybrid vehicle comprising a heat engine and one or more electric motors.

The vehicle 10 is not limited to a motor vehicle but extends to any type of land vehicle comprising a passenger compartment, for example a truck, a bus, a coach.

The vehicle 10 corresponds to a private vehicle or to a vehicle from a rental fleet of vehicles.

The vehicle 10 comprises one or more openings, for example one or more doors 102 allowing access to the interior of the vehicle 10, that is to say to the passenger compartment of the vehicle 10.

A first near-field communication reader 101 is advantageously arranged outside the vehicle 10, that is to say outside the passenger compartment of the vehicle 10 (as opposed to the interior of the vehicle, that is to say outside the passenger compartment of the vehicle 10). i.e. in the passenger compartment). The first reader 101 is for example arranged at the level of the front door of the driver of the vehicle 10, for example the left front door of the vehicle 10 for vehicles whose steering wheel is on the left. The first reader 101 is for example arranged near the handle of the door 102.

According to an alternative embodiment, the vehicle 10 comprises several first near-field communication readers, for example a first reader on each front door of the vehicle 10.

Near-field communication, known as CCP (or NFC in English, for “Near-Field Communication”), is based on short-range and high-frequency wireless communication technology, for example 13.56 MHz. Such technology allows the exchange of information between devices up to a distance of a few centimeters, for example 5 or 10 cm.

When the user of the vehicle 10 (for example the owner or a person who has rented the vehicle 10 for a determined period or a subscriber of a car-sharing service) wishes to access the interior of the vehicle 10, the latter presents a device authentication device near the first reader 101. The authentication device is configured to store an identifier which is read by the first reader 101 when the authentication device is sufficiently close. Upon successful authentication, door 102 (or all of vehicle doors 10) is unlocked to allow the user to get inside vehicle 10.

The authentication device corresponds for example to a passive device, for example a card or a badge, or to an active device, for example a smart object such as a smart phone (standing for “smartphone”) and / or a connected object, for example a connected watch. The authentication device comprises in a memory space one or more identification information which makes it possible to identify and authenticate the authentication device, and by the same person wearing this authentication device. The identification information (s) are for example stored in a secure or encrypted form, for example as part of a public key infrastructure, called PKI (from the English "Public Key Infrastructure").

The first reader 101 is a communication device advantageously comprising an antenna, called a primary antenna, associated for example with a transmitter and with a microcontroller. The authentication device is also a communication device comprising an antenna, called a secondary antenna. The first reader 101 is configured to periodically transmit, via the primary antenna, an electrical signal having for example the form of a pulse of short duration, for example of the order of a few tens of microseconds, to detect the device. authentication when the latter is sufficiently close to the reader. When the authentication device is located at a distance less than a threshold from the first reader 101, for example at a distance of less than 10 cm, the presence of the secondary antenna modifies the voltage at the terminals of the primary antenna. This change in voltage is detected by the first reader 101 which infers that a compatible device is nearby, in this case the authentication device. The first reader 101 then performs an authentication of the authentication device by obtaining the identification information (s) and confirming their authenticity.

The first near-field communication reader 101, the compatible authentication device, the process implemented for the exchange of the identification information (s) as well as the authentication process are known to those skilled in the art and are not described in more detail in the present description.

schematically illustrates the interior of the vehicle 10, according to a particular and non-limiting embodiment of the present invention.

Figure 2 shows a part of the passenger compartment 20 of the vehicle 10, that is to say a part of the interior of the vehicle 10. In addition to the usual components of a vehicle such as the steering wheel, the dashboard , a display system, the passenger compartment 20 or the interior of the vehicle 10 comprises a second near-field communication reader 201. This second reader 201 is similar to the first reader 101, in the sense that it performs the same functions, namely the detection and authentication of the authentication device.

This second reader 201 is for example identical to the first reader 101.

According to another example, the second reader 201 is different from the first reader 101, for example different in shape. The second reader 201 comprises, for example, a housing provided to receive the authentication device. This housing takes, for example, the form of a slot into which the authentication device can be inserted when the latter is in the form of a card. According to another example, the housing takes the form of a bin designed to receive a smart phone. According to the latter example, the second reader 201 further comprises a means for inducting the battery of the smart phone making it possible to recharge the latter when it is arranged in the housing. The housing also includes means for detecting the presence of the authentication device in the housing, for example mechanical, optical or inductive detection means known to those skilled in the art.

The first reader 101 and the second reader 201 advantageously form part of a system for controlling access and starting the vehicle 10, allowing the implementation of a process for controlling the vehicle 10, for example a process for controlling the vehicle 10. 'access and start of the vehicle 10. The system further comprises, for example, one or more computers connected to the first reader 101 and to the second reader 201 via a multiplexed data bus, for example a CAN, CAN FD, FlexRay or bus type. Ethernet. According to a variant, one of the two readers, for example the second reader 201, acts as a computer implementing the process. Such a process comprises for example all or part of the operations described below.

In a first operation, a first authentication of the authentication device is implemented by the first reader 101. Information representative of the result of the first authentication is for example transmitted to the computer implementing the process via the data bus. This information takes for example two values, a first value indicating that the authentication is successful, that is to say that the identifier contained in the authentication device is recognized and valid, and a second value indicating that the authentication failed, i.e. the identifier was not recognized and / or is not valid.

In a second operation, the computer controls the unlocking of one or more doors of the vehicle 10 when the first authentication of the authentication device is positive, that is to say when the first authentication has been successful. Such unlocking thus allows the wearer of the authentication device to enter the interior of the vehicle 10, the process continuing with the third operation.

Otherwise, that is to say when the first authentication of the authentication device by the first reader 101 has failed, the opening (s) are not unlocked, preventing access to the interior of the vehicle 10. The process ends with the second operation. According to one variant, a first message is transmitted via a wireless link to a remote server, to the “cloud” (or “cloud” in French) and / or to a mobile communication device (such as a smart phone for example) to alert of the failure of the first authentication. Such an alert makes it possible, for example, to signal that an unauthorized individual has attempted to enter the vehicle 10. Such an alert is particularly useful for the owner of the vehicle, whether this owner is an individual or a vehicle fleet manager. The device (s) for which the second message is intended are for example recorded in the memory of the computer with the destination identifier (IP address (standing for “Internet Protocol” or “Internet Protocol” in French) or telephone number for example). ). The wireless link is based, for example, on an LTE type cellular communication network (standing for “Long-Term Evolution” in French) 4G or 5G or on a communication network of the LTE type. vehicle to everything, says V2X (from the English “Vehicle-to-Everything”).

In a third operation, a second authentication of the authentication device is implemented by the second reader 201. Information representative of the result of the second authentication is for example transmitted to the computer implementing the process via the data bus. This information takes for example two values, a first value indicating that the second authentication is successful, that is to say that the identifier contained in the authentication device is recognized and valid, and a second value indicating that the second authentication failed, i.e. the identifier was not recognized and / or is not valid.

In a fourth operation, the computer commands or controls the starting of the vehicle 10 by activating or energizing one or more starting devices of the vehicle 10 when the second authentication of the authentication device is positive, that is to say when the second authentication was successful. Such unlocking thus allows the wearer of the authentication device to start and use the vehicle 10.

The starting device (s) correspond, for example, to one or more of the following devices or elements:

- electric starter;

- contact system (also called contactor);

- vehicle propulsion system, for example a heat engine and / or an electric motor.

Otherwise, that is to say when the second authentication of the authentication device by the second reader 201 has failed, the vehicle 10 does not start and remains immobilized, preventing any use of the vehicle 10 by the wearer of the device. authentication. The process thus ends with the fourth operation. According to a variant, a second message is transmitted via a wireless link to a remote server, to the “cloud” (or “cloud” in French) and / or to a mobile communication device (such as a smart phone for example) to alert of the failure of the second authentication. Such an alert makes it possible, for example, to signal that an unauthorized individual has been able to enter the vehicle 10 and attempts to use this vehicle 10. Such an alert is particularly useful for the owner of the vehicle, whether this owner is an individual or an individual. vehicle fleet manager. The device (s) for which the second message is intended are for example recorded in the memory of the computer with the destination identifier (IP address (standing for “Internet Protocol” or “Internet Protocol” in French) or telephone number for example). ).

The first authentication and the second authentication each comprise for example the reception of the identifier contained in the communication device by the first reader 101 and the second reader 201 respectively, the latter being received in accordance with the ISO / IEC 18092 standard and / or to the ISO / IEC 14443 standard using a short-range wireless link (for example less than 10 cm) and at high frequency (for example in the frequency range equal to 13.56 MHz).

According to an alternative embodiment, the first authentication and / or the second authentication implement a comparison of the identifier stored in the authentication device with a list of identifiers, each identifier of the list corresponding to an identifier having the right to access and use of the vehicle 10 (or of a fleet of vehicles comprising the vehicle 10). Such a list is for example stored in the memory of the computer and is for example received from a remote server via a wireless connection of the OTA type (from the English “over-the-air”, or in French “by air”. ), for example via a cellular network of the LTE 4G or 5G type. If it appears at the end of the comparison that the identifier stored on the authentication device corresponds to an identifier from the list, then the first authentication and / or the second authentication of the authentication device are positive, resulting respectively unlocking the doors and starting the vehicle 10.

An update of the list is advantageously downloaded into the memory of the computer each time a new identifier is added to the list. Such a list is for example stored on a “cloud” server, and corresponds for example to the list of customers of a vehicle fleet manager (for example of rental vehicles), an identifier being associated with each customer to which is delivered an authentication device comprising in memory the identification allocated to it.

When the vehicle 10 belongs to a particular owner, a short list of identifiers (for example 1, 2, 3 or 4 identifiers) are stored in the memory of the computer, each corresponding to an individual authorized to use the vehicle. The list is for example updated by the owner of the vehicle 10 via a user interface displayed on the screen of the passenger compartment of the vehicle 10 and / or via a user interface of an application installed on a mobile communication device. of the smart phone or tablet type and connected to the vehicle 10 via a wireless link, for example via a connection of the Wifi® or Bluetooth® type.

According to another variant embodiment, the second authentication is only implemented or initiated once the authentication device is arranged (or positioned or received) in the housing of the second reader provided for this purpose. For example, if the authentication device takes the form of a card and the slot takes the form of a slot, the second authentication is implemented only when the second reader 201 has detected that the authentication device has well been inserted into the slot.

Removing the authentication device from the housing of the second reader 201, for example, causes the vehicle and the vehicle engine to stop. Such a withdrawal is only authorized or implemented by the vehicle 10 if, for example, a set of conditions for the use of the vehicle is fulfilled or verified, the set of conditions comprising one or more of the following conditions:

- the vehicle 10 must be stationary, for example the speed of the vehicle 10 is below a threshold (for example 1, 2 or 3 km / h);

- The vehicle 10 is located on a location provided for parking the vehicle 10 (such a location is for example detected by the vehicle via a terminal or an inductive sensor arranged in the ground at the location).

When the vehicle 10 has been stopped and the engine switched off, for example following the removal of the authentication device from the housing of the second reader 201, a locking of the vehicle 10 is commanded or controlled by the computer provided for this purpose when the device for authentication is detected by the first reader 101. According to a variant, the locking is triggered after pressing a button or a detector provided for this purpose, for example on the handle of the front door of the driver 102, with the authentication device to distance sufficiently close to the first reader 101 to be detected by the latter. Such a locking of the vehicle also causes a de-energization of the components of the vehicle with the exception of the first reader 101.

According to yet another variant, when the vehicle 10 is stopped and the engine switched off, for example following the removal of the authentication device from the housing of the second reader 201, and no locking of the vehicle 10 is engaged, then the the vehicle is automatically locked after a specified period of time has elapsed (for example a few minutes). According to this variant, an alert message is for example transmitted to a remote server, for example to signal that the vehicle 10 has been left without locking triggered by voluntary action by the driver. Such a variant is for example implemented when the vehicle is a rental vehicle to indicate that the rental process has not been completed correctly.

schematically illustrates a device 3 configured to control a vehicle, for example vehicle 10, according to a particular and non-limiting embodiment of the present invention. The device 3 corresponds for example to a device on board the vehicle 10, such as for example a computer.

The device 3 is for example configured for the implementation of the operations described with reference to FIG. 1, of FIG. 2 and / or the steps of the method described with regard to FIG. 4. Examples of such a device 3 include , without being limited thereto, on-board electronic equipment such as an on-board computer of a vehicle, an electronic computer such as an ECU ("Electronic Control Unit"), a smart phone (from the English "smartphone" ), a tablet, a laptop. The elements of the device 3, individually or in combination, can be integrated in a single integrated circuit, in several integrated circuits, and / or in discrete components. The device 3 can be produced in the form of electronic circuits or software (or computer) modules or else a combination of electronic circuits and software modules. According to different particular embodiments, the device 3 is coupled in communication with other similar devices or systems, for example through a communication bus or through dedicated input / output ports.

The device 3 comprises one (or more) processor (s) 30 configured to execute instructions for carrying out the steps of the method and / or for executing the instructions of the software (s) embedded in the device 3. The processor 30 can include integrated memory, an input / output interface, and various circuits known to those skilled in the art. The device 3 further comprises at least one memory 31 corresponding, for example, to a volatile and / or non-volatile memory and / or comprises a memory storage device which may comprise volatile and / or non-volatile memory, such as EEPROM, ROM, PROM, RAM, DRAM, SRAM, flash, magnetic or optical disk.

The computer code of the on-board software (s) comprising the instructions to be loaded and executed by the processor is for example stored in the memory 31.

According to a particular and non-limiting embodiment, the device 3 comprises a block 32 of interface elements for communicating with external devices, for example a remote server or the “cloud”, on-board sensors, devices such as radar. or camera. The interface elements of block 32 include one or more of the following interfaces:

- RF radiofrequency interface, for example of the Bluetooth® or Wi-Fi® type, LTE (from English "Long-Term Evolution" or in French "Long-term Evolution"), LTE-Advanced (or in French LTE-advanced );

- USB interface (from English "Universal Serial Bus" or "Bus Universel en Série" in French);

- HDMI interface (from English "High Definition Multimedia Interface", or "High Definition Multimedia Interface" in French);

- LIN interface (from the English "Local Interconnect Network", or in French "Local Interconnect Network").

According to another particular embodiment, the device 3 comprises a communication interface 33 which makes it possible to establish communication with other devices (such as other computers of the on-board system when the device 3 corresponds to a computer of the on-board system. ) via a communication channel 330. The communication interface 33 corresponds for example to a transmitter configured to transmit and receive information and / or data via the communication channel 330. The communication interface 33 corresponds for example to a Wired network of the CAN type (standing for “Controller Area Network” or in French for “Réseau de controllers”), CAN FD (for English “Controller Area Network Flexible Data-Rate” or in French “Network of flow controllers flexible data ”), FlexRay (according to ISO 17458) or Ethernet (according to ISO / IEC 802.3).

According to a further particular embodiment, the device 3 can supply output signals to one or more external devices, such as a display screen, one or more speakers and / or other peripherals respectively via interfaces output not shown.

illustrates a flowchart of the various steps of a method for checking a vehicle, for example vehicle 10, according to a particular and non-limiting example of the present invention. The method is for example implemented by a device on board the vehicle 10 or by the device 3 of FIG. 3.

In a first step 41, an authentication device detected by a first near-field communication reader is authenticated a first time, the first reader being arranged outside the vehicle 10.

In a second step 42, one or more doors of the vehicle 10 are unlocked according to a result of the first authentication.

In a third step 43, an authentication device detected by a second near-field communication reader is authenticated a second time, the second reader being arranged inside the vehicle 10.

In a fourth step 44, one or more starters of the vehicle 10 are checked as a function of a result of the second authentication.

Of course, the invention is not limited to the embodiments described above but extends to a method for controlling access and use of a vehicle, and to the device configured for implementing the method. .

The invention also relates to a system comprising the device 3 connected to the first reader and to the second reader via a wired link, for example via a multiplexed data bus. According to one variant, the device 3 is integrated into one of the near-field communication readers.

The invention also relates to a vehicle, for example a motor vehicle or more generally a land motor vehicle, comprising the device 3 of FIG. 3 or the system described above.

Claims (10)

A method of controlling a vehicle (10), said vehicle (10) comprising a first near-field communication reader (101) arranged outside a passenger compartment of said vehicle (10) and a second reader (201) of near field communication arranged inside the passenger compartment of said vehicle (10), said method comprising the following steps:
- first authentication (41) of an authentication device detected by said first near-field communication reader (101);
- unlocking (42) of at least one opening (102) of said vehicle (10) according to said first authentication (41);
- second authentication (43) of said authentication device detected by said second near-field communication reader (201);
- Control (44) of at least one starting member of said vehicle (10) as a function of said second authentication (43). The method of claim 1, wherein said first authentication (41) comprises receiving an identifier by said first near-field communication reader (101) over a short-range, high-frequency wireless link and said second authentication ( 43) comprises reception of said identifier over a short-range and high-frequency wireless link by said second near-field communication reader (201), said identifier being stored in memory of said authentication device. Method according to claim 2, further comprising a step of comparing the identifier with a list of authorized identifiers, said authentication device being authenticated by the first reader (101) and by the second reader (201) when said identifier is part of the said list. A method according to one of claims 1 to 3, wherein said second authentication is performed when said authentication device is arranged in a housing of said second near-field communication reader (201) configured to receive said device. A method according to claim 4, further comprising the following steps:
- Detection of a withdrawal of said authentication device from said housing causing said at least one starting member to stop; then
- detection of said authentication device by said first near-field communication reader (101) causing said vehicle (10) to be locked and a set of motor functions of said vehicle (10) being switched off with the exception of said first reader (101). A method according to claim 5, wherein said removal of the housing authentication device is permitted when at least one condition of use of the vehicle (10) is verified and said detection results in termination of a rental service of said vehicle ( 10). Device (3) configured to control a vehicle, said vehicle comprising a first near-field communication reader arranged outside a passenger compartment of said vehicle and a second near-field communication reader arranged inside the passenger compartment of said vehicle, said device comprising a memory (31) associated with at least one processor (30) configured for implementing the steps of the method according to any one of claims 1 to 6. System comprising the device according to claim 7 connected to said first reader and to said second reader via at least one wire link. Vehicle (10) comprising the device (3) according to claim 7 or the system according to claim 8. Computer program product comprising instructions suitable for carrying out the process steps according to one of claims 1 to 6, when the computer program is executed by at least one processor.