I need to require my users to re-login when they digitally sign their InfoPath form. My users feel that someone can leave a InfoPath form open on a computer and someone else can come in and digitally sign the form. I've looked all around for a way to do this, but coming up empty handed. I saw this blog posting for electronic signatures http://www.infopathdev.com/blogs/mel_balsamo/archive/2009/03/02/electronic-signature-template-part.aspx. That is close but not quite there.
Any guidance? Anyone tried to implement prompting for credentials when signing?
Thanks