The Nose Knows
Look, Ma! No hands!
Article: Nose-steered mouse could save aching arms| New Scientist
:"At the start of a session, the nouse's camera takes a snapshot of the user. From this it isolates about 25 pixels representing the tip of the nose and takes readings for the brightness of each pixel. The nouse software then tracks the pattern of pixels.
A double blink switches the nouse on. Its software then scans the region where the nose was last, looking for the 25-pixel target. Once it has found the target, its movements are translated into the same signals that would be expected from a normal mouse.
Gorodnichy has designed several software packages to demonstrate the nouse, including NousePaint, which allows you to draw patterns on the screen using only the nose and eyes (see video).
The nouse can also be used to navigate around 3D computer software, such as virtual design environments and games, but this requires two webcams. In 3D mode, both cameras pinpoint the tip of the nose and the nouse software calculates how far away the user is, and whether they are moving into, or out of, the environment."Won't that make porn more fun.