Not in my neck yet! I actually saw a demo about this technology from Ted.com a year back, it is a good concept to be shared here. Sixth sense is a device whcih hangs around your neck. It has a camera, projector and internet connectivity to produce magic. So what is the hype about? The link at the bottom takes you to the demo and I advice you to view it before reading further.
Overall it is a good effort, but I was able to find some problems where it needs improvement. First being the fact that one need to wear coloured finger caps to use the device makes it hard for common use. Though this technology looks ambitious, it is not of practical use in current situation mainly because the functions it does can be done by a normal smartphone but in a less fancy way.
I personally feel that it can be improved to make better use of the idea.