http://en.wikipedia.org/wiki/Radio-f...Human_implants
Human implants
Hand with the planned location of the RFID chip.
Just after the operation to insert the RFID tag was completed. The yellow is from the iodine disinfection before inserting the chip.
Main article: Microchip implant (human)
Implantable RFID chips designed for animal tagging are now being used in humans. An early experiment with RFID implants was conducted by British professor of cybernetics Kevin Warwick, who implanted a chip in his arm in 1998. In 2004 Conrad Chase offered implanted chips in his night clubs in Barcelona[57] and Rotterdam to identify their VIP customers, who in turn use it to pay for drinks.
In 2004, the Mexican Attorney General's office implanted 18 of its staff members with the Verichip to control access to a secure data room.[58]
Security experts have warned against using RFID for authenticating people due to the risk of identity theft. For instance a man-in-the-middle attack would make it possible for an attacker to steal the identity of a person in real-time. Due to the resource constraints of RFIDs it is virtually impossible to protect against such attack models as this would require complex distance-binding protocols.[59][60][61][62]
Privacy advocates have protested against implantable RFID chips, warning of potential abuse and denouncing these types of RFID devices as "spychips", and that use by governments could lead to an increased loss of civil liberties and would lend itself too easily to abuse. One such case of this abuse would be in the microchip's dual use as a tracking device. Such concerns were justified in the United States, when the FBI program COINTELPRO was revealed to have tracked the activities of high profile political activist and dissident figures. There is also the possibility that the chip's information will be available to those other than governments, such as private business, thus giving employers highly personal information about employees. In addition, privacy advocates state that the information contained in this chip could easily be stolen, so that storing anything private in it would be to risk identity theft.
According to the US Food and Drug Administration (FDA), implantation of an RFID chip poses potential medical downsides. Electrical hazards, MRI incompatibility, adverse tissue reaction, and migration of the implanted transponder are just a few of the potential risks associated with the Verichip ID implant device, according to an October 12, 2004 letter issued by the FDA.[63]
It has been argued that RFID chipping of sex offenders in the US could be politically feasible, and allowable under the U.S. Constitution.[64]