If you've spent any time using a smartphone, you've likely come across QR code stickers, letting you redeem a coupon or get some snippet of information. Mercedes-Benz plans to start putting such codes ...

A file photo of man standing in front of gravestones at the Waldfriedhof cemetery in Munich, Germany. The 5x3.5cm stickers are printed with a QR code, that, when scanned, shows the name of the person ...

BERLIN (AP) — 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 ...