Scanned documents secure authentication based on simple watermarking

This paper is about an application that tries to help people in their relations with their local government. Id EST: in many bureaucratic processes, citizens are required to provide copies of paper documents such as diplomas, birth certificates... Obviously, this kind of documents cannot be provided online. Using this application, users are able to provide the required documents on the internet and the administration can check document reliability to a level of security similar to that offered by an "in person" delivery.