The US Food and Drug Administration has approved an implantable identification
microchip as a means of storing a patient’s medical information. About
the size of a grain of rice, the radio frequency microchip, called VeriChip,
can be inserted under the skin (manufacturers recommend the triceps area),
and physicians can read its unique 16-digit verification number by passing
a scanner over the insertion site. The number is then linked to a database
via encrypted Internet access, and previously stored information is conveyed.
Hampton T. Implantable Chip Approved. JAMA. 2004;292(24):2963. doi:10.1001/jama.292.24.2963-b