Colm O'Regan: I'm fond of the humble QR code

How do you get people to go to a place with an address when they simply can’t or won’t type the address? They’re like a postcode for people who don’t want to type a postcode.

Colm O'Regan: Do you know what QR stands for?

There’s one in our school yard.. A simple little poster. 

“Scan with your phone to take part in this survey.”