http://news.yahoo.com/s/ap/20080126/ap_on_hi_te/chipping_america_iii;_ylt=AjNg9e.Q86K7alF18ANFUdoDW7oF 

Here's a vision of the not-so-distant future: Microchips with antennas will be embedded in virtually everything you buy, wear, drive and read, allowing retailers and law enforcement to track consumer items — and, by extension, consumers — wherever they go, from a distance.

Some of you may have remembered my post about putting RFID chips in US Passports (Got RFID Passport?) . Now we have the US Border Patrol requiring a US Passport from US citizens to LEAVE, not just enter, the U.S. via air travel. The UMW Post (Passports needed to re-enter U.S. by air from Mexico, Canada) explains,