We recently explained how industry because they reduce paper waste, decrease overhead costs, and shorten project timelines. I'd like to add another reason to that list - they're super easy to use! To prove my point, I'm going to walk through the simple steps it takes to apply a digital signature using one of the industry's leading PDF editing, markup, and collaboration software,. A couple things before we get started. • I'm going to cover the steps to create a single visible digital signature in a PDF. You can also add multiple digital signatures and certify a document.