Creepy Chrome extension pinpoints Facebook user locations
A new extension for Google’s Chrome browser pushes the creepy needle into the red zone. Marauders Map tracks the location of anyone using Facebook Messenger who hasn’t disabled its access to their smartphone’s GPS location information.
The extension is so accurate it can pinpoint Messenger user locations to about a meter, and it can also search old messages to create a map of the user’s travels during the past days or even weeks.
The developer of the app, Aran Kahanna, does not appear to be a creep. He’s a young college student in Cambridge, Mass., who wanted to illustrate the dangers of unconsciously sharing personal data. I think he succeeded. (You can read Kahanna’s blog post about Marauders Map here.)