Ethics in Action Millions of VeriChip microchips have been implanted in pets for identification purposes, but the move to humans has alarmed security experts. VeriChip's Xmark subsidiary distributes the Hugs and the Halo systems of infant protection, the RoamAlert system of wandering protection, and the MyCall emergency response system. The chips release a code when a scanner is passed over them, and this code is linked to a database that retains the person's information and can be updated. View online sites that discuss using implanted chips in humans. How can they be used to breach the confidentiality of medical records? How are they being used in nonmedical applications? Write a report summarizing your findings, and include a table of links to Web sites that provide additional details about implantable chips.