This work discusses document security, use of OCR, and integrity verification related to printed documents. Since the underlying applications are usually documents containing sensitive personal data, a solution that does not require the entire data to be stored in a database is the most compatible. In order to allow verification to be performed by anyone, it is necessary that all the data required for this is contained on the document itself. The approach must be able to cope with different layouts so that the layout does not have to be adapted for each document. In the following, we present a concept and its implementation that allows every smartphone user to verify the authenticity and integrity of a document.