Token Security Considerations

[senior.joinu]

Linking my issue here, cause it is basically question #1 in OPs post.

Can you prove your Internet Identity to another service?

Imagine this usecase: the user has II created and logins to some service A; service A attaches some data to the user’s II (some rating metrics for example); now the user logins with the same II to some other service B; service B wants to check if the users rating on service A is 10 out of 10 and provide some additional functionality if it so. How do I implement such a pattern, while services are unable to link two separate principals of this user, despite them being connected to the same sing…