Just in time for the official kickoff to the summer travel season, the Transportation Security Administration announced that passengers ages 13 to 17 can accompany their parents or guardians in the PreCheck line, as long as the family members are traveling with the same reservation. With PreCheck, travelers can wear their shoes, belts and light jackets through the security checkpoint and can leave their laptops and appropriately sized liquids in their carry-on.

Children traveling with preapproved parents or guardians can begin using the program immediately, and they don’t need to enroll on their own. The adult family member must attach their “known traveler number” (KTN) to their frequent-flier account or to the booking reservation. Adults cannot piggyback on their spouse’s membership, nor can children traveling alone use the PreCheck lane without their own membership.

All boarding passes — electronic or paper — must feature the PreCheck symbol. If you don’t see it, go back into the reservation and add the number or, at the airport, ask an airline agent for assistance.