This document summarizes a technology for self-authenticating paper documents. The technology allows users to authenticate and validate any printed document and highlights any changes to the original text. It also allows recovery and display of the original text. The technology does not require special paper, inks, printers, or equipment. It has been granted patents in several countries. While other technologies provide similar solutions, they tend to be more expensive and specialized. The target market is the document archival market, which is growing at a compound annual rate of 10.9% and expected to reach $2.6 billion by 2015. Regulations like Sarbanes-Oxley and HIPAA are driving demand for improved document compliance, trust, and