Hiding Data in Printed Documents

The security of the data in printed documents is one of the most underestimated security areas. Mainly researchers only consider the electronic version of the documents. However, printed documents are still widely used, especially in many strategic areas, such as governments, justice, military, etc. In this paper, we present the basic ideas and examples of how our mechanism works to hide data in printed documents. Using this mechanism, an organization can build a printed document security solution that meets its needs.