PNF Duo Pen Review

The PNF Duo Pen is an interesting device that brings some touchscreen tablet functionality to standard laptops. You attach the USB receiver onto your laptop's screen in a similar way to a webcam, which responds to the movements of the pen itself. Instead of a clip for the receiver, however, you tape a small magnet onto the back of the screen, which allows the receiver to be attached quickly and firmly.



Link: Techradar