Wednesday, May 7 is the first day a Real ID compliant license — or another acceptable document — is needed to board a commercial aircraft in the U.S. Why it matters: If you aren't Real ID compliant, you may experience longer wait times at the airport,

Transportation Security Administration officials will not accept state-issued driver’s licenses or ID cards that are not REAL ID compliant. Under the new REAL ID enforcement rules, all airline passengers 18 and older will need REAL ID-compliant identification or another federally accepted ID at airport security checkpoints.

As of May 7, travelers flying domestically in the U.S. must present a REAL ID-compliant form of identification at airport security checkpoints or expect to go through additional security measures.