Pranav Mistry, a postdoctoral student at the Massachusetts Institute of Technology, wants online life to converge with real life. His latest project is a "wearable computer" dubbed Sixth Sense which seems disarmingly simple: a Web cam, projector, and battery pack hang around Mistry's neck on a lanyard. The components, which together cost about $350, plug into an Internet-enabled mobile phone that rests in the wearer's pocket.
