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by ThePhysicist
2131 days ago
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Typically you don't even ask a user for an e-mail for an OAuth based login. I think you're talking about OpenID Connect, where you indeed need the e-mail to know which login provider is used. I haven't seen that in the wild for a long time though, most sites that offer "Login via X" use an OAuth 2.0 based login flow, either with server-side tokens (e.g. Github) or JWT token (e.g. Google). |
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