An optical secure short-range communication system is presented. The mobile unit (optical smart card) of this system utilizes a retroreflector with an optical modulator, using light from the stationary unit; this mobile unit has very low power consumption and can be as small as a credit card. Such optical smart cards offer better security than RF-based solutions, yet do not require physical contact. Results from a feasibility study model are included.
© 2006 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: September 14, 2005
Manuscript Accepted: October 31, 2005
I. Glaser, Shlomo Green, and Ilan Dimkov, "Optical smart card using semipassive communication," Opt. Lett. 31, 712-714 (2006)