using Intel's Perceptual Computing SDK hand and finger tracking features to control an audio synthesizer. more info and links to src code: http://madsci.havasworldwide.com/2013/01/10/intel-perceptual-computing-sdk-demo-001-hands-and-fingers/+ More details
What are Tags?
Tags are keywords that describe videos. For example, a video of your Hawaiian vacation might be tagged with "Hawaii," "beach," "surfing," and "sunburn."