Device enrollment in a security system

A method of enrolling devices in a security system containing at least a first controller and at least two other devices, a first RFID reader having a read zone and a first RFID transponder, the method comprising the steps of:

• placing the first controller into an enrollment mode;
• reducing the transmit power of the first RFID reader to reduce its read zone to an area proximate to the first RFID reader;
• placing the first RFID transponder within the reduced read tone or the first RFID reader;
• further reducing the transmit power of the first RFID reader, thereby narrowing the size and shape of the read zone, until the first RFID reader detects only the first RFID transponder;
• still further reducing the transmit power of the first RFID reader to a predetermined threshold which assures that the first RFID transponder is physically close to the first RFID reader;
• exchanging information between the first RFID reader and the first RFID transponder, the exchanged information including at least one code usable in encrypting communications;
• and
• using the exchanged information to enroll both the first RFID reader and the first RFID transponder in the first controller of the security system.

A method of enrolling devices in a security system containing at least a first controller and at least two other devices, a first RFID reader having a read zone and a first RFID transponder, the method comprising the steps of:

• placing the first controller into an enrollment mode;
• reducing the transmit power of the first RFID reader to reduce its read zone to an area proximate to the first RFID reader;
• placing the first RFID transponder within the reduced read zone of the first RFID reader;
• further reducing the transmit power of the first RFID reader, thereby narrowing the size and shape of the read zone, until the first RFID reader detects only the first RFID transponder;
• still further reducing the transmit power of the first RFID render to a predetermined threshold which assures that the first RFID transponder is physically close to the first RFID reader;
• exchanging information between the first RFID reader and the first RFID transponder, the exchanged information including at least one code usable in encrypting communications;
• using the exchanged information to enroll both the first RFID reader and the first RFID transponder in the first controller of the security system;
• and
• entering in a table via the first controller enrollment information for the first RFID reader and the first RFID transponder;
• and
• storing the enrollment information in the table,
• wherein the first RFID reader communicates with the first controller only after the first RFID render has been enrolled with the first controller and the first RFID transponder communicates with the first RFID reader only after the first RFID transponder has been enrolled with the first controller.