That might be abrasive, but it's realistic. These changes (as always) will come gradually so that each increment is not quite so bad as to spark riots, but when viewed as a batch change over 30-50 years will be something amazing. Scanners will be the norm for all public transport, possibly private transport and potentially many public spaces over the coming decades.

The idea that this will be limited to the US is rather charmingly naive too.

For sure. I think it will feature in the US, then Europe, maybe Northern Africa?

Australia would love to follow the lead of the US but not sure if we'd be able to justify the cost too early.