There's an app for that. Several actually, but the folks who create EasySignMobile have gone and made their service a bit more accessible to the unwashed masses with an updated version that supports Facebook authentication. The new feature is currently available only for iOS, although we'd imagine Android users will find similar love in the near future, as the company released its first version for Google's platform last October. Also on deck for iPhone and iPad fans, the latest version of EasySignMobile offers integration with Dropbox and Box.net for easy file storage and retrieval. So next time you need to make your mark, perhaps you can reach into your pocket rather than rummage for a pen. Those interested will find the full PR after the break.