Thank you for your interest. Well, the keys are simply very fitting buttons I did find in a draper's shop.
As for pictures how I made it, though I don't have any of this specific wrist comp, you might want to check my Flickr stream, if you are interested in my other stuff as well. There I do post WIP pics from time to time. www.flickr.com/photos/arsenal_…
If you have further questions, just ask. I'm always glad to help.
That's pretty much what the Power Glove was, plus position sensors and two-state finger position sensors. It was one of the most useless NES peripherals. Only a couple of games were made to use it, and playing most games with it was awkward.