These providers for digital signatures exist in Austria: In Austria, the digital signature is very common due to teh broad adaption of ID-Austria. ID-Austria is a qualified electronic signature that can also be used with sproof sign. If you do not have an ID-Austria or want additional features, such as batch signing, with sproof sign you can get your own legally-binding digital signature from a European trusted service provider. Qualified electronic signatures are legally equivalent to handwritten signatures and can be obtained in a few minutes.