PeekInToo - iPhone App

Bit like Rando but with live video, PeekInToo is a global social network that lets users be nosy for a short amount of time. Using a map to navigate, users select a location nearby — or on the other side of the world, if they wish — and pick another user who is accepting requests. The recipient receives a notification that someone wants to ‘Peek’ and they can accept or decline, before holding up their camera to let the other user see what they’re seeing in real time.

Myo - Capacitive gesture band

These are now available for pre-order after a year in development. They also have an open SDK so developers can start exploring it. Works using low-powered bluetooth and because it’s wearable, it has much more scope than light and camera-based gesture equipment. More reliable too I imagine. We’ve had differing results with Leap Motion due to lighting issues.