Cemeteries in Munich allow QR codes as memorials on headstones, Mr. Hoerauf said, and for more than a decade, people whose loved ones are buried in cemeteries around the world have uploaded photographs and other digital keepsakes to create online memorials that can be viewed via QR code.

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.

Police in Munich are investigating a mystery: More than 1,000 stickers were put on gravestones and wooden crosses at three cemeteries in the German city, without any indication of where they came from or why.

The stickers have appeared at the Waldfriedhof, Sendlinger Friedhof and Friedhof Solln cemeteries in the southern German city. Police are investigating the incident.

A peculiar mystery unfolds as over a thousand cryptic stickers appear on gravestones, leaving locals and authorities puzzled and seeking answers.