Here is another smart wearable device that lets you interact with your smartphone, computer, or TV with finger gestures. Wepoint features electromagnetic gesture tracking and lets you play games, shop, browse websites, and play games with 3D gestures on any surface.
Wepoint works like a tiny radar system. It has a speed range of 400-1800 dpi. It is already compatible with most Android and Windows devices but iOS compatibility is in the works. You can find out more about it here.