Passengers are required to scan the barcode of their boarding pass while a TSA officer scans their ID. The machine then authenticates and compares the two to make sure all of the information is accurate.
This could eliminate the black lights and magnifying glasses TSA officers currently use. The new machines are designed to recognize all valid forms of IDs, from driver's licenses to passports.
The machines do not store any personal information. Tests are under way at Dulles International Airport in Washington. They'll start later this month in Houston and Puerto Rico.