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And this is why you need digitally attestable government IDs, and devices that run government-approved operating systems that can securely check these IDs in a tamper-resistant way. Anything else won't survive the "three kids in a trenchcoat" problem.

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the government ids should be enough. Germany has an quite interesting system. Federal issued ids that contain an nfc powered chip that provides only information if the user has the credentials that allow access. The minimum is a datum stored/generated (name, age, fullfills age requirement, service pseudonym, ...) and the maximum is full access without pin requirement. After over an decade i haven't heard of hacks that broke the system. Effectivly it is possible to use it in an offline system that allows access to an venue for someone at least 16 years and all that the system sees is that the owner of the id is at least 16 years old

> And this is why you need digitally attestable government IDs, and devices that run government-approved operating systems

Yes. And government approved food, government approved entertainment, government approved births, government approved travel and government approved deaths.

Wait, we already have most of them. /s

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