Basically the produced QR code is to a forwarding page that is editable and can automatically forward the enquirer on. Neat eh !
Site describes it this way
" Want a QR Code T-Shirt or badge? Use our new QR Code redirector. That way you can alter where the URL in the barcode redirects each time you wear it, rather than print a new one every time! It would be funky with stickers too sad)
Create me a QR Code that I can redirect on a whim!