CityWatcher.com, a provider of surveillance equipment, attracted little notice itself until a year ago, when two of its employees had glass-encapsulated microchips with miniature antennas embedded in their forearms. The chipping" of two workers with RFIDs radio frequency identification tags ... was merely a way of restricting access to ... sensitive data and images ... the company said. Innocuous? Maybe. But the news that Americans had, for the first time, been injected with electronic identifiers to perform their jobs fired up a debate over the proliferation of ever-more-precise tracking technologies and their ability to erode privacy in the digital age. To some, the ... notion of tagging people was Orwellian. Chipping, these critics said, might start with Alzheimer's patients or Army Rangers, but would eventually be suggested for convicts, then parolees, then sex offenders, then illegal aliens until one day, a majority of Americans, falling into one category or another, would find themselves electronically tagged. "It was scary that a government contractor that specialized in putting surveillance cameras on city streets was the first to incorporate this technology in the workplace," says Liz McIntyre, co-author of Spychips: How Major Corporations and Government Plan to Track Your Every Move with RFID. Within days of the company's announcement, civil libertarians and Christian conservatives joined to excoriate the microchip's implantation in people.