The Pattern

The digital pen writes on ordinary paper printed with a unique pattern that is almost invisible to the naked eye: the only difference from a traditional paper is a grey shade on the paper.

This special paper allows the pen to identify it and conveys with precision to the pen how to recognize the handwritten information.

Anoto pattern is made up of tiny dots placed above an orthogonal grid. There are four possible offsets for each dot: above, left, right and below: an area of 6x6 dots gives a unique position.
The pattern is organized in segments which are divided in shelves which in turn are divided in books and pages.

The end user sees a page and that page can be related to other pages in a more complex form. This gives a great flexibility when creating applications.

The pattern can be printed on any paper using standard printing process.