Samsung’s been getting pretty creative with cell cameras lately — the Instinct lets you pan around web pages by tracking movement with the camera, for example — but the company’s latest patent application, for a gesture-based phone interface, might be a little less practical. The idea is to use the phone’s camera to track your hand movements, which, from the drawings, should have you looking insane on the subway in no time. Of course, we’ve all been guilty of waving at and even talking to our devices when they’re acting up, so maybe a little feedback wouldn’t be a bad thing — there’s one gesture we’d definitely like to see programmed in there.