Transponder
From Just Solve the File Format Problem
Revision as of 03:58, 14 September 2013 by Dan Tobias (Talk | contribs)
A transponder is a general term for a variety of devices that send and receive signals. Wireless transponders are used for a variety of applications including automated toll payment and access to gated communities; many cars have one or more attached to their windshield. Contactless smart cards are similar in concept (though usually more compact).