More news about radio frequency id tags, as RSA Security has published a detailed and informative white paper on the technology, which unbeknownst to many, is already ubiquitous in many aspects of our daily life, an example of which is the tags used by drivers on their car windshields which automatically scan and log toll payments. These tags may also in future track your travel itinerary, via RFID readers, as you traverse our nation’s highways. The intertwined issues of privacy and authentication associated with these tags present considerable challenges to corporations using the technology to facilitate inventory controls, as well as to government use for security-related activities. However, negative consumer/citizen response to this passive tracking system is a major consideration, especially with a the growing use of employer-issued smartcards.