A mobile signature through Diia
Diia.Signature lets a person use the Ukrainian Diia application to approve documents from a smartphone. Its official integration guidance describes document signing and website authorization as separate uses of the service. In a Nota Sign document workflow, the action you are completing is approval of the document presented for signature.
The phone is part of the identity and authorization process. Keep it available while you review the document, so you can complete the requested Diia steps when the signing request reaches that stage.
Prepare for photo verification
The official Diia.Signature guidance describes photo verification followed by entry of a five-digit Diia.Signature code. Be ready to complete those checks in the Diia experience. They are the documented method for confirming the person taking part in the request and proceeding with the signature.
The same official guidance also describes an authorization-only scenario. Completing that kind of identity request should not be confused with having approved a particular document. Read the purpose of the request before proceeding.
Complete a Diia request from Nota Sign
Start with the document in Nota Sign, read its contents and complete the required fields. Proceed using the configured Diia.Signature method. Follow the requested identity and authorization steps on your phone, then finish the document workflow in Nota Sign. The provider's mobile verification and Nota Sign's document task are parts of the same signing journey.
Keep the method's scope clear
This entry covers the Diia.Signature electronic signature method connected to Ukraine's mobile identity service. An EU qualified electronic signature is a separate classification and should not be inferred from the presence of Diia in the signing workflow. Use the signature method specified for the transaction.









