Legally valid online signing of documents with the Autenticação.gov citizen card
Qualified digital signatures made easy: Use your digital proof of identity to sign documents securely and with legally binding effect.
Portrait
Authenticação.gov's resources, such as the Citizen Card and the Digital Mobile Key (CMD), allow the use of services and access to portals of various public and private entities, in the areas of banking, telecommunications, energy, health and tourism, among others, as well as the digital signature of documents.
Frequently asked questions
Use your existing qualified signature directly in sproof sign
We have integrated the most important signature providers
We are constantly updating the eID Hub with new providers and authentication methods so that you can obtain legally valid digital signatures as easily as possible - at no extra cost.Smart IDyes®Finnish eID (FINeID)Estonian ID-card (EstEID)Mobile IDPaperless webSIGN (by certSIGN)D-TrustSimplySignEvrotrustprimeSIGNBelgian eID (.beID)CertEuropeLatvian eID (eParaksts)Swisscom Trust ServicesUanatacaID Austria (Handy-Signatur)Croatian eIDCard (eOI)certSIGN TokenSPIDOnline ID function (German ID card)sproof sign eID hub
Why sproof sign?Highest security and compliance paired with an "all-in-one" functionality make sproof sign the top European alternative on the e-signature platform market. 100% developed and hosted in Europe.
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