The copying of copyrighted documents is an issue that is important to copyright holders and governments. Currently, an honor system is used in some schools for reimbursing owners of copyrighted documents, such as those owned by major publishers. A system that automatically identifies copyrighted documents would simplify use and afford better accounting of when copyrighted materials are copied. This technology can be useful in government, school and workplace settings.
Another use is detecting the copying of banknotes. While some banknotes have marks that can be easily detected, this is not the case for all banknotes. When detecting such copying, authorities can be alerted.