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ClickPass is effectively this, although they were OpenID. I don't think it worked out too well for them but it was several years ago, so they may've been too fa
by smhinsey 14y ago
ClickPass is effectively this, although they were OpenID. I don't think it worked out too well for them but it was several years ago, so they may've been too far ahead of the curve. HN used to use them as a sign in provider.