http://www.discovercircuits.com/PDF-FILES/fingersw.pdf I'm thinking about using a bunch of these instead of buttons in my mp3 car. Instead of a button, there would be a piece of metal that is sensitive to the human touch. Hook it up to a bunch of solid state relays on one IC and run it straight to the keyboard hack. Now where can I find that transistor? Thought you guys would find it neat.