RFID tag--you're it.

This article discusses the possible harm to privacy and information security posed by the increasing use of radio frequency identification (RFID) tags. RFID technology is being used in the patrolling of U.S. border crossings and contactless credit card transactions, but its potential misuse by the creative reapplication of an RFID scanner is noted. The limitations of ISO 14443 standard of encryption, which ought to offer security in RFID use, are noted. INSETS: How RFID Works;WHAT'S IN STORE;Types of Tags.