Your space for electronic signature of documents

Click on one of the following certificates to identify yourself to PortaSigma:

We have also found the following certificates, but PortaSigma does not accept them:

Validation Service (ISM) Version:: 10.5.3

Reread certificates

Wait while the Java applet required to run PortaSigma gets loaded. Be patient, this may take 20 seconds or more, depending on your internet connection

If after too long, the applet is not activated, maybe you do not have Java or it is disabled in your browser. You may download Java from


Latest News

New PortaSigma version 1.7.8

Save time saving your usual digital signature requests on templates!

What is PortaSigma?

Many of your customers already have a digital certificate. Offer them the possibility to sign authorizations, requests and contracts online. It is completely legal!

Would you like your contacts to send you documents to sign through PortaSigma? Let them know!

Are you new to PortaSigma? Visit our introductory Tour

What do I need in order to use it?

A standards-compliant web browser, we recommend at least the following versions: Firefox 3, Internet Explorer 8, Opera 9, Google Chrome, Safari

An updated version of Java 6 (p.e. 1.6.0_20)

In order to sign documents, you need a digital certificate from one of the supported providers