Berchtold, WaldemarWaldemarBerchtoldEl-Soufi, DaniDaniEl-SoufiSteinebach, MartinMartinSteinebach2022-04-272022-04-272022-01https://publica.fraunhofer.de/handle/publica/41446310.2352/EI.2022.34.4.MWSF-325enDocument securityIntegrity verificationOCRSmartphone-supported integrity verification of printed documentsjournal article