초록 ▼

In accordance with the present invention, an apparatus is provided wherein a device is disabled if the device is located more then a predetermined distance away from the owner. Accordingly, a lost or stolen device is rendered unusable. The device has coupled thereto a receiver or transceiver. A tran

In accordance with the present invention, an apparatus is provided wherein a device is disabled if the device is located more then a predetermined distance away from the owner. Accordingly, a lost or stolen device is rendered unusable. The device has coupled thereto a receiver or transceiver. A transmitter or transceiver is located separately from the device. When the receiver and transmitter can communicate, the device is usable, when the receiver and transmitter cannot communicate, the receiver disables the device, rendering the device unusable.

대표청구항 ▼

What is claimed is: 1. A security device for a financial transaction card consisting of: a primary transceiver coupled to a financial transaction card; and a secondary transceiver wherein said primary transceiver has a transmit range defining an area within which said primary transceiver can commun

What is claimed is: 1. A security device for a financial transaction card consisting of: a primary transceiver coupled to a financial transaction card; and a secondary transceiver wherein said primary transceiver has a transmit range defining an area within which said primary transceiver can communicate with said secondary transceiver and wherein said primary transceiver of said financial transaction card attempts to communicate with said secondary transceiver by said primary transceiver sending only a first communication to said secondary transceiver which is received by said secondary receiver and wherein said secondary transceiver responds to said first communication by sending only a first response to said first communication to said primary transceiver and wherein upon said primary transceiver receiving said response, said primary transceiver enables said financial transaction card for use in a financial transaction with another device and wherein when said primary transceiver of said financial transaction card cannot communicate with said secondary transceiver because said secondary transceiver is outside of said transmit range of said primary transceiver said financial transaction card is disabled from performing a financial transaction with another device. 2. The security device of claim 1 wherein said financial transaction card comprises a credit card. 3. The security device of claim 1 wherein said financial transaction card is selected from the group comprising an Automated Teller Machine (ATM) card, a debit card, and a gift card. 4. The security device of claim 1 wherein said primary transceiver comprises an active transceiver. 5. The security device of claim 1 wherein said primary transceiver comprises a passive transceiver. 6. The security device of claim 1 wherein said secondary transceiver comprises an active transceiver. 7. The security device of claim 1 wherein said secondary transceiver comprises a passive transceiver. 8. The security device of claim 1 wherein said first communication comprises a ping. 9. The security device of claim 8 wherein said response to first communication comprises a response to said ping.