A new app has been designed which promises to help people be more anti-social.
Cloak uses location data from other social network sites to alert users when people they know are nearby.
Its makers say the app can help you avoid "exes, co-workers, that guy who likes to stop and chat - anyone you'd rather not run into".
The app was created by programmer Brian Moore and the former creative director of viral news site Buzzfeed, Chris Baker.
Mr Baker said: "Personally, I think we've seen the crest of the big social network."
"Things like Twitter and Facebook are packed elevators where we're all crammed in together. I think anti-social stuff is on the rise. You'll be seeing more and more of these types of projects."