CLEAR, a private service that prescreens travelers for a $100 annual fee, has come to Kennedy International Airport. To benefit from the Clear Registered Traveler program, which is run by Verified Identity Pass, a person must fill out an application, let the service capture his fingerprints and iris pattern and present two forms of identification. If the traveler passes a federal background check, he will be given a card that allows him to pass quickly through airport security.
Analysis here.