Don't call it a reference design, but don't call the Nvidia Tegra note a retail product, either.
Wacom on Tuesday surprised artists around the globe with a foray into the pressure-sensitive iPad stylus market along with its own mobile tablet solution based on the Cintiq line.
Wacom's smallest and most-affordable Cintiq has many charms going for it—but it's held back by its lack of Multi-Touch capability.
N-trig's DuoSense Pen 2 ships only with specific tablet and laptop lines for Windows and Android, but for those setups, it's a nice built-in accessory.
Livescribe introduces a smartpen that sends audio and written notes to Evernote automatically.