U.S. authorities unveiled technology at the nation's busiest border that promises shorter waits as officials check travel documents but has raised concerns about targeting by computer hackers.
The system displayed Thursday is designed to read chip-enabled travel documents up to 30 feet from an inspection booth.
It's the 13th land crossing to get the technology in recent months, and Customs and Border Protection plans to have it in place by June at the 39 busiest crossings with Mexico and Canada.
The chips already are contained in about 40,000 drivers licenses in two Canadian border states -- 32,000 in Washington and 7,700 in New York.
Arizona, Michigan and Vermont begin issuing the enhanced drivers licenses this year.
U.S. authorities said the technology will shave six to eight seconds off each inspection because information will appear on an officer's computer screen before a motorist even arrives at the booth.
That would be a welcome development at the 24-lane San Ysidro crossing, where waits exceed three hours in Tijuana, Mexico, during peak times.
"If you save a few seconds, you will reduce the (waiting time) enormously," Customs and Border Protection Commissioner Ralph Basham said at the San Ysidro crossing, where motorists flashed documents out their windows as they reached the front of the line.
Regular passports are now being issued containing a chip that can only be read from distances much shorter than 30 feet.
Other chips that can be read from as far away as 30 feet are being installed on passport cards, a wallet sized travel document. Those chips are also being included in about 10 million "border crossing cards" for Mexican citizens who travel in border regions for short periods of time.
The chips are already on 520,000 "trusted traveler" cards for people who have undergone special background checks.
Some privacy advocates said the document readers lack safeguards, referring to a hacker who reported lifting information from travel documents in the streets of San Francisco with the aid of a $250 gadget.
"Someone with a fairly low-tech device, using off-the-shelf technology from some place like RadioShack, can snag (your information) out of the air," said Brock Meeks, spokesman for the Center for Democracy and Technology in Washington.
Paul Hunter, a Customs and Border Protection official in Washington, said an aluminum storage sleeve prevents people from stealing information. Travelers pull the document from the sleeve -- one is provided by the government -- when they cross the border.
Hunter said successful hackers would only be able to lift an identification number -- not personal information like name and address.
Kathleen Walker, an El Paso immigration attorney, said she hasn't noticed significant improvement in waiting times since the technology was installed in the Texas border city.
The document readers might help, but the only way to achieve shorter lines is adding more inspectors and vehicle lanes, she said.
"Let's not read this is as the Second Coming," she said.