One of the great things about mobile devices like the iPhone and iPad is that they allow professionals to conduct their day-to-day business from pretty much anywhere that has a data connection. That comes as a great help for those who are constantly on the move and are unable to whip out a notebook to access mails or other work related documents. That is partly one of the reason why iOS and OS X productivity apps are so popular, with DocuSign Ink being one of the current hits on the App Store.