[koyote]

Anecdotally I noticed QR codes all over the place in East Asian countries (on receipts in Taiwan for example).

Then here in Australia we now have a QR code system for 'checking in' to an establishment (for Covid tracing). I'd say at this point the vast majority of the population must be using QR codes multiple times a week/month. I've also seen quite a few bars/restaurants implement NFC/QR discs on tables that then point you to the menu/online ordering. It works surprisingly well (and I believe some countries in Europe have done the same in terms of menus at the very least).

So this might be the year of the QR code!

[nmfisher]

In Singapore, it’s also pretty common for cafes to have menus (or even end-to-end ordering and payment) via QR code. I think that’s a pretty good use case (in addition to COVID check in/checkout).

[toyg]

We have those in the UK too, to "check in" cafes etc. Pretty much nobody uses them, which is part of the reason the whole tracing effort was basically abandoned.

[koyote]

They are mandatory here with heavy fines if the premises are found to not use them properly.

It also helps that cases are so rare here that you can have a public list of places they visited while infectious for the public to monitor.