In addition to Real IDs, passports, passport cards, U.S. Department of Defense IDs and DHS trusted traveler cards are considered acceptable forms of identification at TSA checkpoints. A full list of acceptable forms of identification can be found on the TSA website. The TSA says the list of acceptable IDs is subject to change without notice.

The Transportation Security Administration is warning travelers that a Costco membership card is not the same as a REAL ID.