Getting "Chipped"

From Fox News. Emphasis added.

Getting chipped means having a radio frequency identification (RFID) chip implanted in your body. The chip — about the size of a large grain of rice — lies dormant until a special scanner is passed within six inches of the implant. Then it emits a radio signal that beams a 16-digit number to the scanner.

For security uses, that 16-digit number acts like an electronic key. For medical uses, the number is linked to medical records. Doctors to whom you've granted access — emergency room doctors, for example — can use the key to quickly get hold of your medical records.