Passengers will be required to pay $45 in lieu of having a Real ID to cover an additional biometric screening for security. The screening process will take 10-30 minutes. The fee, which can be paid online in advance or in person, is valid for 10 days atairlines security check points. After that a traveler will have to pay again. The fee will cover the technology and security software needed.The fee is intended to stay in place, a senior TSA official said, but it will also "be dependent on the compliance rates that we see from the traveling population." Travelers can still use a passport as a form of ID to fly domestically, too.