Driver : ebeam Bridge the usb device to the input subsystem, creating a generic event device exposed to user space. Xorg's evdev input driver automaticaly use it like a tablet. The module is licensed under the GNU GPL v2.
User space : ebeam_tools - ebeam_calibrator : graphical calibration tool. - ebeam_state : command-line utility to save and restore calibration data. The tools are licensed under the GNU GPL v3.
Currently (tested) devices : - Luidia eBeam Classic Projection and eBeam Edge Projection - Nec NP01Wi1 & NP01Wi2 interactive solution
Supposed working devices, need test, may lack functionnality : - Luidia eBeam Edge Whiteboard and eBeam Engage - Hitachi Starboard FX-63, FX-77, FX-82, FX-77GII
There's other re-branded hardware in the wild : everything mentionning "eBeam" and/or based on ultrasound+IR stylus and receiver might be worth testing.
ebeam kernel module
ebeam tools