Visma Sign's frequently asked questions Can I create and fill in a form with a mobile phone? How do I add a user to my Visma Sign Account? How do I register a company, if I already have a user account? On which laws and regulations are electronic signatures based? What are Visma Sign Forms? What is the difference between strong and light authentication? What to do when the invitation has expired Which nationals can sign documents with Visma Sign? Why does the invitation authentication fail? Why does the signature not show on the document?