Use RFID As Future Event Identification
Now many smart ID card industries have been falling love to the RFID technology. the main problem is just the cost. And with technical developing, many field has change their identification to RFID in recent year. While the control systems and hardware have just been already come into consider.
More information: http://www.xccrfid.com/blog/use-rfid-as-future-event-identification_b10