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EM-Sense: Touch Recognition of Uninstrumented, Electrical and Electromechanical Objects

Published: 05 November 2015 Publication History

Abstract

Most everyday electrical and electromechanical objects emit small amounts of electromagnetic (EM) noise during regular operation. When a user makes physical contact with such an object, this EM signal propagates through the user, owing to the conductivity of the human body. By modifying a small, low-cost, software-defined radio, we can detect and classify these signals in real-time, enabling robust on-touch object detection. Unlike prior work, our approach requires no instrumentation of objects or the environment; our sensor is self-contained and can be worn unobtrusively on the body. We call our technique EM-Sense and built a proof-of-concept smartwatch implementation. Our studies show that discrimination between dozens of objects is feasible, independent of wearer, time and local environment.

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  1. EM-Sense: Touch Recognition of Uninstrumented, Electrical and Electromechanical Objects

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    cover image ACM Conferences
    UIST '15: Proceedings of the 28th Annual ACM Symposium on User Interface Software & Technology
    November 2015
    686 pages
    ISBN:9781450337793
    DOI:10.1145/2807442
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than the author(s) must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected].

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    Publication History

    Published: 05 November 2015

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    Author Tags

    1. context sensitive
    2. emi
    3. object detection
    4. smartwatch

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    UIST '15 Paper Acceptance Rate 70 of 297 submissions, 24%;
    Overall Acceptance Rate 561 of 2,567 submissions, 22%

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    The 38th Annual ACM Symposium on User Interface Software and Technology
    September 28 - October 1, 2025
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    Cited By

    View all
    • (2024)Can a Smartwatch Move Your Fingers? Compact and Practical Electrical Muscle Stimulation in a SmartwatchProceedings of the 37th Annual ACM Symposium on User Interface Software and Technology10.1145/3654777.3676373(1-15)Online publication date: 13-Oct-2024
    • (2024)ViObjectProceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies10.1145/36435478:1(1-26)Online publication date: 6-Mar-2024
    • (2024)TextureSightProceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies10.1145/36314137:4(1-27)Online publication date: 12-Jan-2024
    • (2024)Interaction-Power Stations: Turning Environments into Ubiquitous Power Stations for Charging WearablesExtended Abstracts of the CHI Conference on Human Factors in Computing Systems10.1145/3613905.3650769(1-8)Online publication date: 11-May-2024
    • (2024)Searching for the Non-Consequential: Dialectical Activities in HCI and the Limits of ComputersProceedings of the 2024 CHI Conference on Human Factors in Computing Systems10.1145/3613904.3641945(1-13)Online publication date: 11-May-2024
    • (2023)CamRadarProceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies10.1145/35695056:4(1-25)Online publication date: 11-Jan-2023
    • (2023)A Neural Network-based Low-cost Soft Sensor for Touch Recognition and Deformation CaptureProceedings of the 2023 ACM Designing Interactive Systems Conference10.1145/3563657.3595963(889-903)Online publication date: 10-Jul-2023
    • (2023)Z-Ring: Single-Point Bio-Impedance Sensing for Gesture, Touch, Object and User RecognitionProceedings of the 2023 CHI Conference on Human Factors in Computing Systems10.1145/3544548.3581422(1-18)Online publication date: 19-Apr-2023
    • (2023)Touch-to-Access Device Authentication For Indoor Smart ObjectsIEEE Transactions on Mobile Computing10.1109/TMC.2021.308949722:2(1185-1197)Online publication date: 1-Feb-2023
    • (2023)MaterialSense: Estimating and utilizing material properties of contact objects in multi-touch interactionInternational Journal of Human-Computer Studies10.1016/j.ijhcs.2022.102985172(102985)Online publication date: Apr-2023
    • Show More Cited By

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