Since August, the US-Visit program has tested forms with RFID at five United States border crossings: two in Nogales Ariz.; two in Blaine, Wash.; and one in Alexandria Bay, New York.

The RFID projects are just several of the department's ongoing effort to monitor U.S. borders with technology. The US-Visit program also has completed installing all 104 land border port of entry, those staffed with customs and border officials, with biometrics entry capabilities. US-Visit first installed biometric entry procedures at the 50 busiest land border ports along the U.S.-Canada and U.S.-Mexico land borders in December 2004.

Since January 2004, US-Visit has processed more than 44 million visitors, which makes the program the largest-scale application of biometrics in the world, the department said. RFID embedded in I-94 forms used by people who cross U.S. borders frequently, but biometrics has enabled US-Visit to stop more than 970 people with histories of criminal or immigration violations, including federal penitentiary escapees, convicted rapists, drug traffickers, individuals convicted of murder, and numerous immigration violators.