[DanBC]

The English (maybe rest of UK too I dunno) approach is a voluntary code of practice for shops that sell vapes and juices to check that people have been smokers before selling to them.

I think this is the right approach for the UK. I'm not sure it'll work in the US.

[partialrecall]

How does that work in practice? Honor system? Asking to see a receipt from a cigarette purchase?

[DanBC]

It's just an honour system.