We've long marveled at the wondrous creations enabled by 3-D printing. Well, now comes 3-D handwriting.
A plain rollerball pen filled with a conductive ink can draw circuits on a sheet of paper, where they can provide power to an LED display and an antenna, among other potential uses.
If you're like me, the lack of computing power in your T-shirt causes constant problems. Well, thanks to the guys over at Xerox, you'll never have to worry about a jacket that can't run Windows 7 ever again. The company has just announced a new process for creating an ink that doubles as a circuit, paving the way for ubiquitous computing through printable electronics.