Quote:
Originally Posted by Schumi
No need for GPS even- just need a phone with an RFID transceiver and RFID tags on your keys, wallet, etc. When they go out of range, the phone goes off.
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OK, there ya go. I don't know much about electronics. How small can the RFID's be? Still, it would sell if it worked with a cell phone. Do cell phones have that capability as sold?