Forget the sock on the doorknob – whenever the need for privacy arises, grab your phone, open Sock-It and tap it. Once activated, the Sock-It app uses iBeacon technology to let anyone who comes near your door know that you’re, well… a little busy at the moment. It’s simple, just turn on the “Do Not Disturb” function and anyone who comes close and also has downloaded the app automatically will receive a notification letting them know it’s probably best to give you some space for a while. After all, who really wants a sock on the door?