I got involved in an interesting conversation on LinkedIn about ways to use QR codes in the library. Here's a PowerPoint on Slide Share that is very informative: Libraries Thriving QR Code Seminar [slideshare id=12959926&w=425&h=355&sc=no] View more PowerPoint from Libraries Thriving Here's a library that uses them in their newsletters . Any more ideas? I'd love to hear how you think they can be used.