Anonymous writes "Engineering students at Duke University have taken advantage of the accelerometers in emerging cell phones to create an application that permits users to write short notes in the air with their phone, and have that note automatically sent to an e-mail address. The 'PhonePoint Pen' can be held just like a pen, and words can be written on an imaginary whiteboard. With this application a user could take a picture with a phone camera, and annotating it immediately with a short caption. Duke Computer Engineering Professor Romit Roy Choudhury said that his research group is envisioning mobile phones as just not a communication device, but a much broader platform for social sensing and human-computer interaction. Such interactivity has also emerged in the work of other research groups, such as MIT's Sixth Sense project, Dartmouth's MetroSense project, and Microsoft Research's NeriCell project, to name a few."