The “this” referred to in the title is a QR code, short for Quick Response, a 2-dimensional barcode that can be used for a variety of purposes, including e-mail, Web links, and address book information. The codes are appearing in magazine ads, stores and libraries.
I have posted some QR codes around 9th floor, in the call number areas that correspond to the ones on the Biology 103 Lab handout, available on the Web at http://www.jsu.edu/library/pdfs/handouts/BY103.pdf. If you scan the code with your smartphone’s camera using QR code reading software, it will display a link to the URL for the handout.
Find QR code readers in the application store for your phone (iTunes Store, Android Market, Blackberry App World, etc.) by searching for QR. You may also find QR codes for various apps.








