These are similar to the dot patterns in artworks that produce an often intricate pattern.

On other cars, there may be a dot pattern all the way around the edge of the windshield.

The brain is still able to match these random dot patterns.

What Bela did was create a pair of identical random dot patterns.

But a photograph near the gallery entrance gives a source for the dot patterns in one of the works.

Another dot pattern then appeared in the same location.

In those experiments, the researchers used a picture instead of dot patterns.

But storing a dot pattern for each letter takes a lot of memory.

Hence, a separate dot pattern is needed for each size of type.

By the end of the year, he said, similar paper with unique dot patterns associated with particular e-mail addresses will be available.