I had a letter through the post the other day from the NHS, urging me to get my flu vaccination (which I'd had done some six weeks ago - they could have checked and saved the effort). Also enclosed was another letter with a QR code
I don't have a smartphone, but my laptop does have a built-in camera, which I duly activated and held the QR code in front of it. Nothing happened - zilch - nada - bugger all!
What should I do to get this thing to work, so that I can save the world?