Take a photo of a barcode or cover
I really like these, they're small and easy to read, while this says it took a few days, I spread it over the week while reading others. You could easily finish it in a night if you were an avid reader. I'm glad the show and the books aren't exactly the same, it's kept me guessing who A is. I also like the extra at the end from The actual A. It's like they're telling the whole story