[xlevus]

The best place I've seen QR codes is on the tube.

Because hey, I'mma scan this QR code, and then remember about it when I'm topside.

[corin_]

My favourite QR code use was from the tube: https://pbs.twimg.com/media/AneZAsiCAAATy1Q.jpg:large

Keep your phone hidden (but check out this QR code!)

[jschulenklopper]

> check out this QR code!

Instead of trying to scan that QR code (in a corner of a billboard), here's the URL: http://www.btp.police.uk/pickpockets/