Measures speed and distance of your cursor and wastes some cpu power.
Lets you compete for the "Maillot Jaune" with your lazy co-workers over bonjour.
Find out how far you have moved via gpsvisualizer.com
Built-in Fired for sure™ technology.
Works with metric units and old fashioned things like inch, feet, legs etc.
Occupies valuable space on your display.
Makes noise when it should not.