Digitalisation

Hamburg's government takes next step towards digital management

18 June 2025
New ZeSI mobile app checks digital documents - more apps to follow

The City of Hamburg's new "ZeSI mobile" app lets users verify the authenticity of digital documents such as registrations or address stickers on ID cards. Developed by the Bundesdruckerei GmbH in collaboration with the City of Hamburg, the application is intended for registering a residency electronically (eWa) and is available free of charge

Mobile app to verify authenticity

"The introduction of the ZeSI mobile verification app is another important step towards digitalized and secure administrative procedures. The ability to easily and securely verify documents such as digital registrations will bolster trust in Hamburg's digital services," said Christian Pfromm, Chief Digital Officer. The ZeSI app can be used to verify the authenticity of all electronic documents with a forgery-proof barcode or a "visible digital seal" (VDS). This latest app is the first of three modules being developed by Bundesdruckerei GmbH. The other two modules, ZeSI Generator and ZeSI AD, are scheduled for release later this year. ZeSI ad will also enable the VDS to be generated and checked automatically and in larger numbers in future, which may be important for companies.
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