Gone are the days when real-time tracking of another human being required an unmarked van, a satellite, and men in dark glasses.
The launch of Facebook's "Nearby Friends" feature allows users to track their friends everywhere.
The feature displays nearby friends on a map of the local area. It promises accuracy within half a mile and works quite well in spaces like airports and train stations, where Facebook encourages you to simply 'walk toward the dot.'
Disturbing? Slightly. But — for now anyway — this is a voluntary and fully opt-in feature that requires your permission before activating. Naturally we encourage your discretion with this feature. Find out more here.