The Portasignatures Service can be accessed using the most common web browsers (Chrome, Firefox, Edge...) .

For use from a desktop computer, it is necessary to have a Java Virtual Machine installed to run the Signature Applet. The virtual machine can be downloaded from the JAVA website .

If you prefer, you can install the " Viafirma Desktop " utility which will not require downloading the JNLP every time you access or sign.

In all cases , the user must have a digital certificate issued by a qualified provider. You will find information about qualified certificates in Certificates accepted by the AOC Consortium validator.