A group of consumers sued Amazon Wednesday for allegedly getting “backdoor access” to their data and tracking their location.

Amazon was sued on Wednesday by consumers who accused the retailing giant of secretly tracking their movements through their cellphones, and selling data it collects. According to a proposed class action in San Francisco federal court,

Amazon.com (NASDAQ:AMZN) is facing a lawsuit filed by consumers who allege the retail behemoth has been secretly tracking their movements through their cellphones and monetizing the data it collects,