a Bluetooth you actually might use Transformer Jewelry - THE ORB This mobile headset doubles as a ring and can be used 30 feet away from your phone. It vibrates if you get a call, like the previous bracelet, but also has a voice-to-text device so you can read messages on your ring. It should be available for sale soon.
Camera ring! Be discreet taking pictures with a ring camera. Connect to the tablet like slate to upload pictures and see how they turned out.
Researchers at the University of Southern California’s ICT Graphics Lab have created a new type of holographic display that can generate simultaneous 3D views for multiple observers without the need for special glasses. The setup also happens to be relatively inexpensive since it’s built around a specially modified off-the-shelf DLP projector that works with a spinning mirror.