InternalHomeSecurity

Stating the problem
There are four family members. If any one of them are in a particular room then the PIR or IR beams alert must not be sent to the base PC by the embedded AtmelMicro monitoring the IR and PIR.

Solutions
Fit each person with a RF defice lets say a RFID tag. On etering a room the RFID reader indicates to the AtmelMicro that a known person has entered the room. The micro in turn won't signal to the base computer that the PIR or IR beam has been triggered. The embedded micro allows a certain delay for the RFID reader to identify the person walking through the door.

Any other way of indicating via a RF signal that the person triggering the PIR inside a room is a known person: AM, Zigbee transmitters? Transponders, FM, Bluetooth?

Links
SecuringPerimeter