Take a photo of a barcode or cover
I loved this book! It was such a puzzle, and I feel like there is so much meaning I have yet to tease out of it. I'm not sure if that's actually true or not, but either way I love that feeling. It was amazingly written - very similar in my mind to the style of Kraken, by China Miéville, which I also loved - and it was a bit scary to learn about the world which you can see the roots of in our every day existence. A bit long, I suppose, but by the last 50 pages or so I really didn't want it to end - so much so that I stopped reading it for a couple days to let it linger.