Well .... it might be little hard to convince patient to get something under their Skin to do patient check In or tracking.
WASHINGTON, DC (September 13, 2007) --
The American Medical Association released a report that outlined the pros and cons of radio frequency identification (RFID) tags - implanted devices the size of a grain of rice that are used to store medical information. The devices could give emergency room doctors quick access to the records of chronically ill patients and reduce medical errors, the report said. But implanting the tags also may compromise patient privacy. In addition, their small size could allow them to move to other parts of the body. They may also cause interference with electrical devices such as defibrillators.Made from a microchip and a copper antenna encased in a glass capsule, the device transmits a unique 16-digit number that can be read by a handheld scanner. The number is used to locate a medical record stored on a secure Web site. VeriChip Corp. of Delray Beach, Fla., is selling kits containing scanners and the large-bore needles used to insert the chips. The company has sold about 2,500 chips worldwide for use in people, and several hundred have been implanted, including about 100 in the United States. The devices, originally developed to track livestock, have been implanted in more than six million cats and dogs to trace lost or stolen pets.
source : HIMSS News