Patent ID: 8243982

Claim:
A method for embedding information in a document comprising: receiving a digital image data document page to be rendered; checking a border area at an edge of the digital image data document page; determining whether all the digital image data within at least a portion of the border area partitioned into blocks is blank; clearing all the digital image data within at least a portion of the blocks of the border area if it is not blank to produce blank partitioned blocks; receiving information to be embedded; encoding the information to be embedded as a plurality of data carrying dot patterns, each dot too small to be visually noticeable; determining whether a sufficient number of blank partitioned blocks are greater than or equal to a number of bits of information to be embedded, divided by a number of bits which can be embedded per blank partitioned block; and in response to a sufficient number of blank partitioned blocks existing: embedding each of the plurality of data carrying dot patterns in the border area; and rendering the document with the embedded data carrying dot patterns.