Arc Touch Mouse
Arc Touch Mouse’s innovative design allows for quick use and storage. Curve it comfortably to get started. Then smoothly glide your finger up or down the touch strip. When you’re done, keep the tiny transceiver plugged into your computer’s USB port, or attach it magnetically onto the underside of the mouse. Then flatten Arc Touch Mouse to turn it off, and slip it into your pocket or bag as easily as a cell phone.
The touch strip on the Arc Touch Mouse responds precisely to the speed of your finger movement, using Haptic feedback (light vibration that signals scrolling speed) to scan through documents or web pages as quickly—or as cautiously—as needed, entirely by feel.
More information: http://www.boundlessat.com/Keyboards-Mice/Mice/Microsoft-Arc-Touch-Mouse