LongPen is a new device that will allow book authors to autograph the pages of their books for fans while they are sitting in another continent thousands of miles away.

Here's how it works: The author scribbles a message using a stylus pen on a computer tablet. On the receiving end, in another city, a robotic arm fitted with a regular pen signs the book. The author and fan chat via webcam.

LongPen produces an unique signature each time because it copies the movement of the author in real time.

The video exchange can be recorded on DVD for a memento or for proof when signing legal documents or credit-card transactions.

Watch a LongPen Demo

Watch a LongPen Book-signing Session

Source: LongPen | Yahoo! | Technovelgy