The guys over at Engadget have spotted a wrist wearable PDA that looks sufficiently geeky. The device is called the Eurotech WWPC (wrist wearable PC). The concepts features include a low power usage CPU, Bluetooth, GPS and a 3.5" TFT screen.

Looking at the images of the device I would say that should the WWPC ever actually come to market you will have to have a good self-image and be secure in your geekdom to wear it. I bet it would be popular at a Star Trek convention.