Proximity-based content sharing systems for mobile tend to focus on one-at-a-time transfers -- see Android Beam and Apple's upcoming AirDrop as examples. Google, however, has just patented an interface that would simplify sharing content with nearby groups. Users would only have to drag private items into a public space to share them with everyone inside of a certain range; the reverse would hide those items once again. The approach wouldn't be limited to files, either, as it could be used for invitations to chat sessions or events. Google won't necessarily take advantage of its sharing patent, but the concept is simple enough that we wouldn't be surprised to find it in future apps or Android revisions.