DocuSign has launched a free app for Android devices that lets users  drag and drop their legally binding signature and initials into documents, place text and check boxes to complete forms, and then return via email.

DocuSign Ink for Android is available on the  the Android Market and works on most document types, including Microsoft Office (like .doc, .ppt, and .xls,), Adobe PDF with form field recognition, all scanned and faxed documents, and all text and image files (like .tif, .jpg, .png, and .eps).

The DocuSign ID Card protects the user’s identity and signature with a clickable audit trail direct from the signature showing who signed, when, and where

DocuSign Ink promises unlimited signing and stores your DocuSigned documents in the cloud for free.’

"DocuSign Ink is one of the coolest productivity apps we've seen take advantage of HTC’s innovative digital pen technology," said Jad Boniface, developer program manager at HTC. “Customers will love signing all types of documents from their HTC tablets. DocuSign has brought the future of electronic signature here now.”

The DocuSign Ink for Android app joins DocuSign Ink for Apple iOS and the DocuSign Ink plug-in for Microsoft Outlook – both launched in November 2011.

The company says the DocuSign Global Network is already used by more than thirteen million business users to complete more than 110 million transactions.