A QR Code is the little cryptic square appearing on consumer goods, posters and in magazine ads. You take a snap of it with your smartphone and voila! It takes you to a website - a video, or an info blurb - about the product.
We decided to be adventurous and add a QR code (two, actually) to my hot-off-the-press novel, Trouble in the Hills. It is an adventure story, after all.
Here's the QR code that appears on the back:
Go ahead, try it! See where it take you....