It's entirely possible that you've never heard of Siggraph. It's a fairly specialized conference held by the Special Interest Group on GRAPHics and Interactive Techniques.
What that means is that it's all about cool ways of messing with computers and electronics, and the dedicated Emerging Technologies space is stuffed full of some of the weirdest computer interfaces that we've ever experienced.
See what we mean in the gallery below.
Via Siggraph 2012
All photos by Evan Ackerman for DVICE, on location at SIGGRAPH 2012 in Los Angeles, California.