A system and method for enhanced security by incorporating RFID processing circuitry within a key switch assembly. The RFID key switch assembly includes four subassemblies; the key/tumbler assembly, rotating and stationary switch contacts, RFID Processing Circuitry and an electrical connection interface....http://www.google.com/patents/US7696878?utm_source=gb-gplus-sharePatent US7696878 - RFID key switch with integrated key circuitry
