iOS: DocuSign Ink gets rid of the hassle involved with printing, scanning, or faxing documents to sign by letting you open any document or take a picture of it with your device and securely send it.

This detailed guide covers how to sign documents on iPhone and iPad without needing a third-party app or service.

Sign with Google Drive on Android or iPhone The Google Drive app -- included on all Android phones and can be downloaded onto an iPhone -- includes markup tools that make it easy to sign a document.

SEATTLE , May 18, 2011 /PRNewswire/ — DocuSign® (www.docusign.com), the world's most trusted electronic signature solution with more than seven million customers, today announced that a new version of ...