So, Its nothing special but the company I work for makes a product called an iPanel. It is basically a monitor with a built in Digitizer and you use an electromagnetic pen kinda like a mouse.
Well, I sometimes fix them and I managed to get some spare parts and rebuilt one and mounted it for maintaining my Hybrid/core.
Here are some pics.
Here is a link to you tube for a 15 second video of how it works.http://www.youtube.com/watch?v=g5dbpVljjMk