One of Microsoft’s latest research projects, SoundWave, offers users the chance to control their computer with gestures powered by a computer’s speakers, microphone, and some inaudible sound.
The technology uses the Doppler effect in order to detect gestures. A computer pumps out inaudible sound waves, and then the microphone listens out for how hand positions change the resulting echoes.
The tech is still being developed and refined but it does raise several interesting possibilities about the future of human-computer interaction.
Okay, its not really invading but there are a lot of ballons and they definitely get destroyed by an awesome, homebrewed, programmable lazer system.
Some laser-loving guy named ZoofTV (who also throws custom laser shows in his bedroom) created a system that can recall and then fire on multiple preprogrammed targets.