virtual laser pointer for Logitech Spotlight devices

 Projecteur is a virtual laser pointer for use with inertial pointers such as
 the Logitech Spotlight. Projecteur can show a colored dot, a highlighted
 circle or a zoom effect to act as a pointer. The location of the pointer
 moves in response to moving the handheld pointer device. The effect is much
 like that of a traditional laser pointer, except that it is captured by
 recording software and works across multiple screens.