No I didn't know when I tried it, I assume the best (which you should too ;)) but unfortunately it let me down. I often see regular cashiers preparing the next article, while having the previous one in their hand. I don't get why that matters though because it's a new system. It doesn't work like the old one, that's the entire point so why provide an inferior UX if you want people to use it?

Thanks, I was confused as to what the purpose was. If I can open a bank account by showing my ID and my face at the same time, it should be pretty trivial to implement the same system.