The goal of the See&Touch project is to design/implement a special mouse for disabled people, which allows a person to fully control a computer by using just vision and one single body movement. This project develops hardware, firmware and software.
Parapin makes it easy to write code under Linux that controls individual pins on a PC parallel port. This kind of control is very useful for electronics projects that use the parallel port as a generic digital I/O interface (instead of as a printer port)