I've been working on some software that lets you use your existing camera phone as a virtual mouse by locking onto tags and physically rotating it around and so on. It's most easily explained by checking out the videos. In particular, the volume control one (MPEG) is fun.Link (Also spotted on Warren Ellis' blog)
Boing Boing editor/partner and tech culture journalist Xeni Jardin hosts and produces Boing Boing's in-flight TV channel on Virgin America airlines (#10 on the dial), and writes about living with breast cancer. Diagnosed in 2011. @xeni on Twitter. email: firstname.lastname@example.org.