Use your existing digital proof of identity and sign important documents online with the highest signature standard.
The resources of Authenticação.gov, such as the Citizen Card and the Digital Mobile Key (CMD), allow you to perform services and access portals of various public and private entities, in sectors such as banking, telecommunications, energy, health, tourism, among others, as well as to sign documents digitally.
Why to sign digital instead of analogue?
Is the digital signature 100% legally valid?
Is sproof sign GDPR compliant?
How can I invite people to sign?
Can signature recipients also choose other signature providers?
Do externals have to pay for signature or be sproof sign user:in?
sproof sign as an alternative