Poster in my train station: "Our timetables are being updated. Scan these QR codes to download them to your phone." Below that were eight pictures of timetable

Poster in my train station: "Our timetables are being updated. Scan these QR codes to download them to your phone." Below that were eight pictures of timetables, showing their color-coded covers so you could identify them from the paper timetable you might already have, with a QR code on each one. Below those were instructions on how to download a QR code reader if you didn't have one already. QR codes for info are awesome.