Students at WPI have created a new take on the standard PC mouse with a device they're calling "MagicMouse". The undergraduate student team built a wireless mouse that you wear like a ring, using the natural gestures of your hand to control the cursor on the screen. This little doodad works by using a number of receivers placed around the user that track the motion of the tiny ultrasonic transmitter the user wears on their finger.
The super-cool part about this? It's done with off-the-shelf parts, and currently only costs $155 to put together. Imagine if someone starts manufacturing these for sale in bulk. At volume, the prices would come down significantly. This could be one of the best tools in recent memory for lecturers and presenters who rely heavily on computers for their presentations.
Read more at Engadget.