We have recently started building a robotic arm, with Jim Qode. This arm will track your hand movements with a cam, and will play the rock, paper and scissors game with you, in a realtime action.
Here are a few photo and video from the development stage. The hand here is the test version, the final one will be more eye candy, as the mechanic parts are designed digitally and will be prepared on a cnc machine with plexiglass sheets.
We have used a Sanguino kit to be able to control all the servos.
Test video of the hand movements:
Rock, Paper and Scissors Robot from MrBeaver on Vimeo.