With the advent of new sensing technologies, precision free-air interaction is becoming
viable as a contender for the next generation of expressive, embodied interaction modalities.
ZeroTouch [5], a novel multi-touch sensor that allows for free-air multi-finger, multi-object
sensing, is one example of this next generation of free-air interfaces. We develop its use in a
digitally-projected finger painting application, placing the see-through multitouch sensor in
direct line-of-sight between an artist and a remote canvas. This allows the artist to reach …