Even a wee bit of anonymized location data is enough to identify you

Fast Company:

“Companies often claim to have ‘anonymized’ your location history by taking your name off it,” says Peter Eckersley, the chief computer scientist of the Electronic Frontier Foundation. “But that is totally inadequate because you’re probably the only person who lives in your house and who works in your office, and it’s easy for any researcher or data scientist to look at a location trace and figure out who it belonged to.”

If you gave someone my location data, completely scrubbed of any identifying info other than geo-coordinates, it would be simple for them to turn that into my name, address, phone number and, with a bit of work, even more personalized information.

If my location data includes a stop at a house, especially if I only stop at one house, chances are good that’s my house. A simple lookup in a public tax database and they’ve got me, and a wealth of info about me.

Great article.