Pd is surprisingly good at visuals. Quickly whipped up a pilot study for my lab-mate's in-vehicle UI study. Also made a 2x2, 3x3, and 4x4 grid for easy medium and hard mode. The hand tracker is the Leap motion camera.

• Provides auditory feedback of what zone you are in so you can keep your eyes on the road.
• Randomly picks a new target zone and announces it every 10 seconds using [urn].
• Collects reaction time, accuracy, target zone, and trail # and outputs to a .txt..

If anyone else has a leap camera, here's the code.