Amazon founder and CEO Jeff Bezos laughs as he talks to the media while touring the new Amazon Spheres during the grand opening at Amazon's Seattle headquarters in Seattle, Washington, U.S., January 29, 2018. Amazon has been selling a facial-recognition system to police, sparking fears that the technology will one day power mass surveillance. On Tuesday, the American Civil Liberties Union and 35 other advocacy group sent a letter to the company's CEO Jeff Bezos, demanding that he stop providing the technology to law enforcement. The technology, called Amazon Rekognition, can identify people's faces in digital images and video. Police in Oregon and Florida have been using the system to help them solve crimes, but the ACLU argues that it's ripe for abuse.