Page Options   Microchip WebSite Literature Search Options Text Search   Microchip Product Lines KEELOQ® Security ICs         About Security Devices   KEELOQ® is a patented code-hopping technology. Microchip KEELOQ products provide a method for encrypting data for a unidirectional transmission, where each transmission is unique even if the same button is pressed. KEELOQ® Security Device Categories   Decoders     KEELOQ decoding products are used in receivers for remote keyless entry, garage door openers, car alarms, secure remote and access control applications.   Encoders     KEELOQ encoding products are used in transmitters for remote keyless entry, garage door openers, car alarms, secure remote and access control applications.   Transponders     KEELOQ transponder products are used in tags/keys for immobilizer, identification and access control applications. Page Modes  Graphics Version Page Details Microchip's Legal Information Return to top of page Page Updated on: 03/16/2001