The much talked about airport security fast lanes may not just be the exclusive privilege of trusted travelers -- at least not at one U.S. airport. If you have just one carry-on bag, you might be able to sail through security without having to give up all that personal information.

Pittsburgh International Airport (PIT) in Pennsylvania has established an express security lane exclusively for travelers who pack lightly. Specifically, anyone with one or no carry-on piece can take the airport's new fast lane through security. The airport received approval from the Transportation Security Administration (TSA) whose officers will staff the new checkpoints. Anyone carrying additional items beyond the single carry-on, even if they include the personal items passengers are often allowed beyond the standard carry-on (such as briefcases or purses) will be sent to the regular security lines.

Some airlines already arrange with airports to provide express security lanes for their elite frequent flyers, first and business class ticket holders, and even those who pay an additional fee. However, in most cases, this simply gets people to the front of the line faster but does not change the overall screening process that still requires the removal of shoes and other items. The TSA is currently testing a dedicated security fast lane for trusted travelers who submit to background checks and allow access to their travel history and other personal data.

PIT may be the first airport in the U.S. to offer a dedicated security line for anyone traveling lightly as long as the only carry-on item is no larger than 22 x 14 x 9 inches (56 x 35 x 23cm). According to airport authorities, the dedicated line could alleviate as much as 25 percent of the regular checkpoint traffic. That is, as long as what passengers have in their single carry-on bags won't set off any alarms. Will other airports follow?