PreCheck passengers are directed to special screening lanes where they are not required to remove their shoes, belts or light jackets. They can also keep their computers in their cases and are not subject to the TSA’s so-called 3-1-1 rule, which limits liquids carried by each passenger to three 3.4-once (100 ml) bottles, contained in a single quart-sized clear plastic bag.
"If TSA determines a passenger is eligible for expedited screening through the TSA PreCheck vetting process, information will be embedded in the bar code of the passenger’s boarding pass," the agency said in a statement. "TSA will read the bar code at the checkpoint and the passenger may be referred to a lane where he/she will undergo expedited screening."
The program is open to certain frequent fliers from Delta Air Lines and American Airlines, plus some members of the federal Customs and Border Protection agency’s Trusted Traveler programs, including Global Entry, SENTRI and NEXUS, who are U.S. citizens. Eligibility requirements are posted on the screening agency’s website, www.tsa.gov.