The Fly pen was created by LeapFrog and Anoto, a Swedish high-tech company that developed the underlying technology that makes pen and paper digital.

Here's how it works: The digital pen has a small, built-in camera that records what has been written or drawn on custom paper printed with almost-invisible dots arranged on a minute grid pattern.

The
Fly pen
recognizes its location on the grid as it moves across the paper, allowing LeapFrog to load a variety of functions or learning tools to different areas of a single piece of paper.

The Fly Pentop Computer, priced at about $100, comes with a set of papers preprinted for gaming and education. Children could learn the names and capitals of various states by pointing the pen anywhere on a map of North America printed on the special paper.

Or they could play a game where the pen provides the name of a state for the youngster to point to on the paper.

They could also use the pen to play music, by drawing a piano keyboard on a piece of paper and touching the keys with the pen. Additional applications, such as mathematics and language translation, can be bought separately.

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