The use of facial recognition in airports has long been controversial, with citizens expressing outrage over the abuse of their privacy. This confrontation came to a head recently when San Francisco voted to ban facial-recognition software in law enforcement.
But why do state agencies like Customs & Border Protection (CBP) and the Transportation Security Administration have the right to take this data in the first place? What will they do with it—and what delimits their usage? Do we as citizens have the right to refuse?