VeriChip, first announced on December 19, 2001, is a miniaturized, implantable, radio frequency identification device (RFID) that can be used in a variety of security, emergency and healthcare applications. About the size of a grain of rice, each VeriChip is composed of FDA-accepted materials and contains a unique verification number. That number is captured by briefly passing a proprietary, external scanner over the VeriChip. A small amount of radio frequency energy passes through the skin energizing the dormant VeriChip, which then emits a radio frequency signal transmitting the verification number.

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