EFF launches Age Verification Hub

I have a friend attempting to solve this. He's basically creating oauth for age verification. You sign up with his service and verify your age. After that it works similarly to oauth, but instead of return your identity, it just returns your age.

It's not a perfect solution, as he would still know who you are, but it's built in a way where you create a token locally to pass to the site that includes your age, and that site passes it to his site, which verifies the signature. So he knows who you are but not what sites you visit, and the sites know your age but not who you are.

When I read the title I hoped that EFF was going to do exactly that.

There’s also a way to improve it: Sell “age verification cards” in physical stores. Just like they are verifying that minors aren’t buying alcohol or cigarettes, they can verify that these cards are bought only by grown ups. Sure wouldn’t be perfect but it greatly improves anonymity and especially in paid-for adult services can be used as a payment method so repeat verification will happen for top ups.