I did ask that and, while they obviously didn't give figures for either, did say that by CTR they were judging actual clicks - i.e. yes, it was a case of having

I did ask that and, while they obviously didn't give figures for either, did say that by CTR they were judging actual clicks - i.e. yes, it was a case of having a QR code making people click it, not that it was making people scan it. (They were also tracking QR scans seperately, but didn't say how well that was going.)