If you aren't obviously adult then yeah. Where do you live so there are no laws on selling the alcohol to children?

There are laws, but in many countries they are not strictly enforced. In Japan, buying beer in the self checkout lane will just give you an “are you over 20?” prompt, no verification: https://news.ycombinator.com/item?id=46227987

Interesting, thank you!

Store doesn't get to photograph your ID, share it with 548 of their advertising partners, and leak it to 7 different hacker groups.