I'm not sure how to explain what I want exactly but I'll give it a shot.
For one of my future projects I want to make the PWR, RESET and DVD DRIVE buttons completely different. I was wondering if there is a way to make the buttonS to the computer into a type of laser mechanism. Another way to put it lets say you put your finger or hand in some type of hole and it brakes some type of laser and then activates whatever. I was thinking along the lines of a laser security system when you brake the beam it sounds the alarm. Well I figured this would be the best pool of knowledge to see if anyone knows of a way to pull this off.