The device doesn't launch until June, but it can be purchased at a variety of retail stores. The pen itself will be $49.99 and the books are $13.99 each.

A tiny camera embedded in the pen allows the computer to read dots on the paper, thus reading what is written there. It will cost $99, with added accessories priced from $7.99 to $34.99.

LeapFrog Enterprises Inc., maker of the LeapPad educational toy line, has sued Mattel Inc.’s Fisher-Price Inc., sparking a patent-infringement battle over talking books that are expected to be ...

The pen works only on LeapFrog books, so parents do not have to worry about scribbles on the coffee table. And it is compatible with the older Tag library of books. LeapReader has a USB port to ...