Dozens of policing agencies are currently using cell-site simulators (CSS) by Jacobs Technology and its Engineering Integration Group (EIG), according to newly-available documents on how that company provides CSS capabilities to local law enforcement. A proposal document from Jacobs Technology,...
And this is why if you MUST take your phone somewhere "important", you leave it off until it's needed-- preferably battery disconnected, if your model still allows you access. Location data can blow an alibi just as surely as it can make one.