A MEMS-based, wireless, biometric-like security system

Joshua D. Cross; John L. Schneiter; Grant A. Leiby; Steven McCarter; Jeremiah Smith; Thomas P. Budka

doi:10.1117/12.848964

5 May 2010 A MEMS-based, wireless, biometric-like security system

Joshua D. Cross, John L. Schneiter, Grant A. Leiby, Steven McCarter, Jeremiah Smith, Thomas P. Budka

Proceedings Volume 7679, Micro- and Nanotechnology Sensors, Systems, and Applications II; 76791U (2010) https://doi.org/10.1117/12.848964
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

We present a system for secure identification applications that is based upon biometric-like MEMS chips. The MEMS chips have unique frequency signatures resulting from fabrication process variations. The MEMS chips possess something analogous to a "voiceprint". The chips are vacuum encapsulated, rugged, and suitable for low-cost, highvolume mass production. Furthermore, the fabrication process is fully integrated with standard CMOS fabrication methods. One is able to operate the MEMS-based identification system similarly to a conventional RFID system: the reader (essentially a custom network analyzer) detects the power reflected across a frequency spectrum from a MEMS chip in its vicinity. We demonstrate prototype "tags" - MEMS chips placed on a credit card-like substrate - to show how the system could be used in standard identification or authentication applications. We have integrated power scavenging to provide DC bias for the MEMS chips through the use of a 915 MHz source in the reader and a RF-DC conversion circuit on the tag. The system enables a high level of protection against typical RFID hacking attacks. There is no need for signal encryption, so back-end infrastructure is minimal. We believe this system would make a viable low-cost, high-security system for a variety of identification and authentication applications.

Citation Download Citation

Joshua D. Cross, John L. Schneiter, Grant A. Leiby, Steven McCarter, Jeremiah Smith, and Thomas P. Budka "A MEMS-based, wireless, biometric-like security system", Proc. SPIE 7679, Micro- and Nanotechnology Sensors, Systems, and Applications II, 76791U (5 May 2010); https://doi.org/10.1117/12.848964

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KEYWORDS

Microelectromechanical systems

Resonators

System identification

Information security

Network security

Temperature metrology

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