In order to initiate administrative procedures, you need an electronic certificate endorsed by any of the official national certification agencies or an electronic ID card, as indicated in the Information and Verification of Certificates section.
For the electronic signature of documents, an @signature component is required, which takes a few minutes to download and install. Please be patient and read the set up instructions.
Given the size of the information sent, you will need broad band. Likewise, you will need an electronic certificate for individuals or legal entities. All documents will be transferred online, so they will have to be packed into files no larger than 4MB.
Technical Requirements for the @Signature Component
Specified in @afirma web page.