Beware of geeks bearing gifts.
Find My Friends uses global positioning system (GPS) to let people share their locations with friends. The locations of people are indicated by a tooltip on a satellite map. And since the app uses GPS, the locations are accurate up to several meters.
According to a post in a Mac website message board, a New York City man bought his wife a new iPhone 4S and installed Find My Friends without informing her. He said he had suspicions his wife was meeting a man who lived uptown. His suspicion was confirmed by Find My Friends, who showed her there. He then texted her to ask where she was and she answered that she was with friends in a completely different location.
He said he would be using the data he gathered to divorce his wife. “Thankfully, she’s the rich one,” he said.
There is no definite confirmation of the incident but the post shows the extent of location data gathered by consumer devices like smartphones.