A QR Code (abbreviated for Quick Response Code) is a machine-readable code consisting of an array of black and white squares (color generators are available), which is typically used for storing URLs or other information. A bar code scanner app reads the code and directs the user to the site.
The QR code is handy tool to market and sell your book:
How to Use QR Codes:
Define the objective of the material you are printing
○ Running a free giveaway or time bound promotion?
§ Generate a QR code to the link to "make the sale"
○ Drive traffic to your website or blog?
§ Generate a QR code to open your web page
○ Increase subscribers to your mailing list?
§ Generate a QR code to sign up for the list
○ Increase your FACEBOOK likes?
§ Generate to your FACEBOOK page
Create the marketing material with your custom QR Code. Common places to print your QR Code
○ Flyers and/or posters
○ Business Cards
○ Back Cover of your book
You can find free QR Code generators by searching Google or other search engines. I use: QR Stuff . com With a subscription, you can also take advantage of analytics.
I just found: http://www.visualead.com/ - which looks like another great tool - it allows you to use custom photos in your URL.
Be sure to download a Bar Scanning App on your smart phone or table to test your QR codes.