https://motherboard.vice.com/en_us/article/gykgv9/securus-phone-tracking-com... https://www.zdnet.com/article/us-cell-carriers-selling-access-to-real-time-l... https://www.nytimes.com/2018/05/10/technology/cellphone-tracking-law-enforce... https://www.zdnet.com/article/securus-police-cell-phones-warrantless-trackin... https://news.ycombinator.com/item?id=17081684 https://www.locationsmart.com/try/ Cell carriers are selling access to your real-time phone location data The company embroiled in a privacy row has "direct connections" to all major US wireless carriers, including AT&T, Verizon, T-Mobile, and Sprint -- and Canadian cell networks, too. Kevin Bankston, director of New America's Open Technology Institute, explained in a phone call that the Electronic Communications Privacy Act only restricts telecom companies from disclosing data to the government. It doesn't restrict disclosure to other companies, who then may disclose that same data to the government. He called that loophole "one of the biggest gaps in US privacy law." SIM Card Baseband Secrets https://www.youtube.com/watch?v=31D94QOo2gY