Meet the Phree: a mobile input device that lets you write virtually anywhere. It connects to your phone, tablet, laptop, or even TV (anything with a Bluetooth connection) and works with Office, OneNote, Evernote, and other apps. You can receive, write, or send text messages using its display. The Phree can even be used as a headset or Bluetooth mouse.
The device relies on Optical Translation Measurement technology to track your hand motion across almost any surface. Phree has a elegant design with an ergonomic shape. It is developer friendly as well. The project is getting funded on Kickstarter at this time.