Hey, I have an idea of something, but I'm not sure what the terminology is for it.
Essentially, I'm looking for something where:
1. A trusted server issues a token to a person. The idea here is that this server has real-world checks to make sure that a human only gets 1 token, period.
2. When the person wants to authenticate with a website, they use their token. The server has a guarantee of uniqueness, while the person's token remains private unable to be associated with accounts on other websites.