It's none of the above. It's a QR Code.

A QR Code (short for Quick Response) is a specific matrix barcode (or two-dimensional code), readable by dedicated QR barcode readers and camera phones. The information encoded can be text, URL or other data.

The simple scan of a QR Code can direct customers to specific information on your website or anywhere else you place information online. Multiple codes can be generated to link to product information, added value features (i.e. recipes and coupons), videos, Facebook pages and more!
We generated a QR Code that links directly to our homepage and added it to our business cards!