What breaks if/when third party cookies go away?

[samuelgoto]

Here are a few things that comes to mind:

button personalization (e.g. profile picture)

For example:

And here is for google's sign-in:

auto sign-in

TODO(goto): gather links

Anything else we are forgetting? Anything in enterprise or EDU?

[achimschloss]

Session Discovery - #14 (which is a prerequisite for the button personalisation above)

[samuelgoto]

I'm going to resolve this thread here now that I have written down what we expect to break (and have a place to learn more).

https://github.com/WICG/WebID/blob/main/cookies.md