The T.S.A. is reminding travelers that Costco cards are not on their own going to get you through security. “Can’t fly on hot dogs and hope,” the agency said.

As travelers adjust to new identification requirements for flying in the U.S., TSA has some advice for fliers who may be confused: Your Costco membership card does not count as a REAL ID.

Some travelers mistakenly think a Costco card is a REAL ID, but TSA confirms it's not valid for airport security.