QR (quick read) code is 2-D code that you scan with a QR reader app on your smartphone, which then takes you automatically to more info: a website, calendar, text, music, photos, timetable, PDF--almost anything. The app is free. (I use QR Reader on an iTouch) And it's easy: download the app, point your device's camera at the nifty graphic, and get whisked to the Land of More.
If you have a book about to hit the shelves (physical or virtual), why not plaster everything within reach with a variety of these codes? You can make then almost any size. (I've gone large because, hey, why not?)
This one takes you to an mp3 of me reading the beginning of the same book:
And this one will go to some quotes about the book's main character, Aud Torvingen. (Perhaps at some point I'll find a generator that allows more text; that last quote is from The Advocate).
To generate QR code for free, use this (or something similar; I'm sure there are many). It's really easy, and the code graphic comes in several sizes, which you can then expand or shrink. Use a tiny one for your business card. A huge one on a t-shirt. Put them on ticket stubs, posters, print ads, letterhead, receipts, a mug, the side of your car, stickers on the back of a bathroom door--along with whatever text or images you think might intrigue potential readers.
What are you waiting for?