QR codes have been misused and overused lately, but the fact remains that they are a great way to link the printed world with the digital one. Once a PDF document is printed, all the functionality of its hyperlinks are lost, but a QR code can bring a print reader right back to the web.
The QR Code Generator for Acrobat QR Code Generator is a timely addition to the PDF publisher's arsenal. It will create a QR code from any string that you enter into the input field. Existing codes can be altered, too.
Check out this post by Adobe's Joel Geraci for a step by step guide.
OK, so you want to stamp your document. Maybe you need to give reviewers some advice about the document's status or sensitivity. This tip from author Ted Padova demonstrates how to add stamps with the Stamp Tool along with related comments.