SAN FRANCISCO - AUGUST 15: San Francisco Mayor Gavin Newsom signs up for Clear, a new security program, at the San Francisco International Airport on August 15, 2007 in San Francisco, California. Designed with the frequent flyer in mind the optional fast pass program will cost $99 per year and will use biometrics such as iris scans and fingerprints to clear airport security. (Photo by David Paul Morris/Getty Images)
