SIGNiX System Requirements

Operating System

  • Windows Vista
  • Windows 7
  • Windows 8
  • Windows 10
  • MacOS X v10.4.11 and above 
  • iOS 4.0+
  • Android 2.0+

Web Browser

  • Microsoft Internet Explorer, version 9.0 and higher
  • Google Chrome, version 12 and higher. See below on opening PDFs in Chrome
  • Mozilla Firefox, version 3.0 and higher. See below on opening PDFs in Firefox
  • Safari, version 4.1.3 and higher 
  • Opera, version 8.0 and higher
  • Microsoft Edge Browser
Note that other browser configurations may work, but have not been specifically tested nor approved for use.

PDF Viewer

For the best experience viewing and printing digitally signed, electronic documents, you should use Adobe Acrobat or Adobe Reader version 9.1 or higher.

Note that browser-dependent PDF viewers for Firefox and Chrome, as well as Preview on OS X and iOS may display the signature but will not display the tamper-evident seal. Be sure to view documents in a compliant PDF viewer such as Reader, Acrobat, Nitro Reader, or Fox-It Reader.


An email address and access to the Internet is required.