RFID: To Tag or Not to Tag

Companies and government agencies increasingly use radio frequency identification technology to track products and people, and RFID opponents say it poses privacy risks. Here's what the technology is all about. By Kim Zetter.

Retailers love them, privacy advocates eye them with suspicion and some Christians think they're the "mark of the beast." For such tiny devices, RFIDs are stirring up huge controversies. ...

Source: Wired News