Adobe EchoSign

be EchoSign is an official Adobe app that lets you use a digital signature on any document, as well as send and track documents for others to sign digitally. With Adobe EchoSign, you can sign any document anytime, anywhere. The signature can be done either with a fingertip (which is a bit inaccurate) or with a stylus (considerably more precise). From the Adobe EchoSign app, you can also send docum...