Patent ID: 8581737

Claim:
A security system, comprising: a system control panel for arming and disarming the security system; a door sensing unit comprising a first radio frequency (RF) transceiver interconnected with the system control panel over a network, the first RF transceiver being mounted proximate to a door that defines at least a portion of a perimeter around an area to be monitored by the security system, the first RF transceiver having an RF detection field proximate to the door a memory for storing at least a first ID and a second ID associated with at least one of the security system and at least one approved portable device, and a processor; and a portable device comprising a second RF transceiver, the second RF transceiver automatically transmitting a device packet that includes the first ID and the second ID to at least one of the first transceiver, the first RF transceiver comparing the first ID to the second ID, the first RF transceiver receiving the device packet when the second RF transceiver is within the RF detection field, the first RF transceiver sending a disarm message to the system control panel over the network to disarm the security system when the first ID and the second ID are the same and prohibiting, the disarm message when the first ID and the second ID are different.