Last modified 4 years ago Last modified on 2016-01-28 11:42:26
Keycard
http://i.imgur.com/87Mx3jh.jpg A Keycard is a small strip of plastic roughly the size of a credit card or driver's license which stores a physical or digital signature used for user authentication, generally on physical locks.
Variant Short-range RFID


The keycards used in the Harland Broadcasting Corporation building also double as identification cards, listing the owner's department and clearance on the front, with a magnetic strip on the back, and an RFID chip embedded inside. The RFID card allows doors to be unlocked at close range, while the antiquated magnetic strip acts as a secondary failsafe, as well as a potential mechanism to unlock secure containers and doors that mere proximity should not open.