CapTag: toward printable ubiquitous internet of things: poster abstract

ABSTRACT

Many human activities involve interactions with passive objects. By wirelessly sensing human interactions with such "things", one can infer activities at a fine resolution, enabling a new wave of ubiquitous applications. This forms the basis of the tangible user interface allowing individual to use omnipresent objects as a control interface to the digital world. Existing works have tendencies to create such interface with complicated circuitry, leading to overwhelm complexities. To conquer these, we propose the inkjet printable capacitive tags (CapTags), empowering a new paradigm of printable communications and sensing modality. We use discrete capacitive and inductive components to simulate the tag-interrogator system, and prove the feasibility of proposed hardware featurization and high frequency sweeping strategy where the information can be encoded in the resonating spikes. This enables the touch points to be detected by searching resonating detune effects. Although this work only includes the designs and simulations, we believe this new sensing modality would truly realize the vision of printable ubiquitous computing.

References

1. Chuhan Gao, Yilong Li, and Xinyu Zhang. 2018. LiveTag: Sensing Human-Object Interaction through Passive Chipless WiFi Tags. In 15th USENIX Symposium on Networked Systems Design and Implementation (NSDI 18). USENIX Association, Renton, WA, 533--546. https://www.usenix.org/conference/nsdi18/presentation/gao
2. Mitchell Kline. 2010. Capacitive Power Transfer. Master's thesis. EECS Department, University of California, Berkeley. http://www2.eecs.berkeley.edu/Pubs/TechRpts/2010/EECS-2010-155.html
3. Gierad Laput, Walter S. Lasecki, Jason Wiese, Robert Xiao, Jeffrey P. Bigham, and Chris Harrison. 2015. Zensors: Adaptive, Rapidly Deployable, Human-Intelligent Sensor Feeds. In Proceedings of the 33rd Annual ACM Conference on Human Factors in Computing Systems (Seoul, Republic of Korea) (CHI '15). ACM, New York, NY, USA, 1935--1944.
4. Motorola Inc. [n.d.]. BiStatix Technology, White Paper Version 4.1. http://www.mindspring.com/~us010466/BiStatix%20Whitepaper%20r4.1.pdf
5. Ivan Poupyrev, Chris Harrison, and Munehiko Sato. 2012. TouchÉ: Touch and Gesture Sensing for the Real World. In Proceedings of the 2012 ACM Conference on Ubiquitous Computing (Pittsburgh, Pennsylvania) (UbiComp '12). ACM, New York, NY, USA, 536--536.
6. Roy Want and Daniel M Russell. 2000. Ubiquitous Electronic Tagging. IEEE Distributed Systems Online 2 (2000).
7. Teng Wei and Xinyu Zhang. 2016. Gyro in the Air: Tracking 3D Orientation of Batteryless Internet-of-things. In Proceedings of the 22Nd Annual International Conference on Mobile Computing and Networking (New York City, New York) (MobiCom '16). ACM, New York, NY, USA, 55--68.
8. Thomas G. Zimmerman, Joshua R. Smith, Joseph A. Paradiso, David Allport, and Neil Gershenfeld. 1995. Applying Electric Field Sensing to Human-computer Interfaces. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (Denver, Colorado, USA) (CHI '95). ACM Press/Addison-Wesley Publishing Co., New York, NY, USA, 280--287.

Index Terms

• Human-centered computing

  • Ubiquitous and mobile computing

    • Ubiquitous and mobile computing systems and tools