Sign your PowerPoint Presentations with HelloSign
HelloSign is a new service from HelloFax that allows you to sign your documents. The application can pull your documents including PDF, Microsoft Word, Microsoft PowerPoint presentations, etc. from where you have them hosted in the cloud (Dropbox, Evernote) or upload from your hard drive in order to sign it digitally. Then you can send it signed to others.
It also has an audit trail that is maintained for each document. It is available on the web and via iPhone or iPad apps. You can use HelloSign for free but there are plans to roll out enhanced features and plans like document workflow management and esignature branding which will add more value to the service. These new features will be available based on a subscription, likely. However, signatures will remain free.
Currently there are some alternatives like DocuSign, Adobe EchoSign and DotLoop. These applications allows you to sign documents and request digital signatures on documents which may be helpful for any individual or at corporate level.
However, for example DocuSign and EchoSign have limites on the number of documents that users can electronically sign or request signatures for for free.
You can see how it works on this video below: