Take a photo of a barcode or cover
see_sadie_read 's review for:
Devourer
by Cixin Liu
It was ok. I realise that it is a translation, but the dialogue still felt a little forced and I found it unlikely that the one guy would remain so collected while everyone else panicked (repeatedly). Having said that, I liked the message the story imparted. It successfully put humanity's minuscule importance in the scope of time/space in to perspective.