Author is from Latvia (and so am I). You do actually get carded for energy drinks if you look under 30.
However, more relevant to the post, is that when you're ordering groceries online, you need to verify your age at checkout if you're buying stuff like alcohol (or energy drinks). It's trivial, and for a lot of people it uses the same authentication service that they already use to access their bank.
I think almost all of Europe. Have you ever tried teaching a room of 30ish teenagers all high on quadrupled RDI of caffeine? It makes distributing software on macOS seem like a walk in the park
The UK also has a big issue with "corner shops" (tiny stores operated usually by one person) that are fronts for organised crime and will sell you a lot more than energy drinks without checking your ID. Cash payment usually preferred.
Also things are going to get hot at the next general election if you're following what just happened in this week's council elections.
However, more relevant to the post, is that when you're ordering groceries online, you need to verify your age at checkout if you're buying stuff like alcohol (or energy drinks). It's trivial, and for a lot of people it uses the same authentication service that they already use to access their bank.