A system and method for controlling communications in a security system based upon RFID techniques. The RFID reader of the security system can be provided with multiple modulation techniques, multiple antennas, and the capability to vary its power level and carrier frequency. The controller of the security...http://www.google.com/patents/US20040160309?utm_source=gb-gplus-sharePatent US20040160309 - Communications control in a security system
