location tracking Ignoring warrants, the Secret Service has been buying up location data from phone companies Thom Dunn

data dragnet How one guy's exercise routine made him a burglary suspect, thanks to Google's Geofence Warrants Thom Dunn

location tracking Facebook offers funny answer for why it tracks users' locations even when they turn tracking services off Xeni Jardin

to opt out just travel in time to the mid-twentieth century A data-broker has been quietly selling realtime access to your cellphone's location, and they suck, so anyone could get it for free Cory Doctorow