> Using cell towers to detect location is not as accurate as GPS. ... By using cell tower triangulation (3 towers), it is possible to determine a phone location

> Using cell towers to detect location is not as accurate as GPS. ... By using cell tower triangulation (3 towers), it is possible to determine a phone location to within an area of about ¾ square mile. https://transition.fcc.gov/pshs/911/Apps%20Wrkshp%202015/911_Help_SMS_WhitePaper0515.pdf https://transition.fcc.gov/pshs/911/Apps%20Wrkshp%202015/911... Practically useless unless you are willing impose a strict curfew within a one mile radius