Electronic Signing: HelloSign app (via @justrick)

I spotted this on one of the tech-y news feeds to which I subscribe:

We live in an increasingly paperless world, but just try to get someone's signature without one or more sheets of letter-size stock. Whether you need to collect signatures or fork over yours, it usually means dealing with printed matter.

This made me wonder if there was some sort of use-case here for ebook signing. The HelloSign app allows you to annotate PDFs or images you take on the fly, by signing directly on your screen:

The app gives you two options. First, you can "scan" a paper document by taking a photo with your iPhone, iPod Touch, or iPad. Second, if you receive a PDF via e-mail, you can open that attachment in HelloSign.

In my quick tests, both options worked quite well. Once you've got your document loaded, it's a simple matter to add text, a checkmark, a date stamp, and, of course, your signature.

Has anyone used similar technology to facilitate digitally personalising and signing an ebook for a fan?

Check it out here: http://www.macworld.com/article/2010909/app-spotlight-sign-documents-on-the-go-with-hellosign.html