In a wooded cemetery in Munich, a white sticker with a puzzling QR code appeared on a gravestone late last year. Then, over the next few weeks, more and more stickers mysteriously appeared, until more than 1,

German police are investigating after over 1,000 QR-code stickers were slapped onto graves across three cemeteries in Munich. The small stickers, when scanned with a mobile phone, show the deceased person’s name and their location in the cemeteries.