Re: [proposals] Interoperable Private Attribution (IPA) (#2)

The proposal also seems to assume that the user is logged in to at least one match key provider. What happens if the user is not? Does the browser make up a device identifier? Does it encrypt null? (Presumably collisions could abound there) or does it return an error to the calling script?
If a user doesn't want to sign in to Facebook (or uses [Facebook Container](https://addons.mozilla.org/en-GB/firefox/addon/facebook-container/)) does that mean they will never be able to be attributed to a conversion?

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Received on Monday, 14 February 2022 16:36:26 UTC