Precheck passengers who displayed suspicious behavior would still be subjected to full security checks.
It has also expanded its TSA PreCheck initiative, which expedites checks of known passengers.
Precheck members usually get to use security lines set up for first-class and elite-level frequent fliers.
If a passenger is cleared for Precheck screening, a code is embedded in a traveler's boarding pass.
In fact, Precheck may be making regular lines longer since equipment and officers are devoted to a little-used lane.
For domestic travel, Global Entry pays off because it gets you into Precheck.
And PreCheck members flying on United, Delta and US Airways will see notification of PreCheck clearance on boarding passes now.
It could undermine the US's PreCheck system which randomly decides which frequent fliers can skip part of the pre-boarding security process.
The TSA has expanded its PreCheck program under Pistole, expediting travel for frequent fliers and others who provide information on themselves.
Once in Precheck, TSA still checks names against terrorism watch lists before every flight, just as it does for other travelers.
Besides zipping through security screening quickly and easily, Mr. Stegmeir noticed another difference: TSA agents at the Precheck lane are usually smiling.
Passengers on both airlines can use Precheck in Las Vegas and Minneapolis-St.
Delta passengers have Precheck access in Atlanta, Detroit and Salt Lake City.
Approved travelers who are in the U.S. Customs and Border Protection's "Global Entry" program can transfer into Precheck using their Global Entry number.
If the pass has the code, a Precheck passenger is steered to a separate screening lane for what amounts to old-style airport screening.
One bright spot: TSA has opened its PreCheck program to international flights, giving expedited screening to trusted travelers enrolled in the program for overseas trips.
But Precheck travelers actually don't know if they will get to use the easy screening until the TSA officer checking IDs actually scans the boarding pass.
Expansion will continue in 2013, but Precheck probably won't be available at all 450 commercial airports, since many have a small number of travelers each day.
Even if you get into Precheck through Global Entry, it will currently only work for you on American and Delta domestic flights at airports with Precheck lanes.
For now, users are mostly frequent fliers invited to join, but the TSA said PreCheck will open up to military personnel, kids and people ages 75 and older.
Later this month, Precheck is set to expand to Washington's Reagan National Airport for Delta passengers and certain members of the U.S. military, and Chicago O'Hare with American.
He added that applications to Global Entry had increased about 50% since it was announced that members would be able to use Precheck, demonstrating the interest from passengers in the service.
Gary Kaminsky, who travels 100, 000 miles a year domestically, says he's gotten Precheck screening on about 80% of his trips so far out of Los Angeles International Airport, his home base, on AMR Corp.
The security information on the barcodes is only meant to be decoded by Transportation Security Administration (TSA) officers, so it was not thought to be a problem that PreCheck selected which users would get a less rigorous safety check in advance.
"I like Precheck, but it would be much more valuable to me if I were able to know before leaving for the airport whether or not I had Precheck approval for that day's flights, " said Beth Allen, a University of Minnesota economist and frequent traveler.
Once TSA announced in the fall that enrollment in Global Entry and CBP's other "trusted travel" programs (Nexus for frequent travel across the Canadian border and Sentri for frequent travel across the Mexican border) would get you into Precheck, applications for Global Entry took off.
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