[URSpider94]

By the way, this same information is already tracked and stored by the mobile networks themselves, and can be obtained by the government with a warrant (or likely by organizations like the NSA or CIA without one, given recent precedents).

See http://nce.fd.org/PDF%20Cellular%20Tower%20Location%20Inform... :

"Cellular service providers generally retain information about phones’ contacts with towers, including which tower(s) each phone contacted during any given check-in, and which “face” of the tower(s) the phone contacted."

[mattmanser]

with a warrant being the three magic words which totally changes the context. Oversight is important. There is no oversight to this data collection.