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this post was submitted on 28 Sep 2024
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Isn't this the same as "Total Cookie Protection" that was released a while ago?
Yes and no, total cookie protection prevents cookies from loading from other sites, CHIPS is a new standard that makes it so that that is impossible* to begin with. (simpifying here but thats the idea)
*unless the browser allows it
my impression was that it was impossible already, because there was effectively a different cookie storage for every site
oh
https://developer.mozilla.org/en-US/docs/Web/Privacy/Privacy_sandbox/Partitioned_cookies
so this adds a setting to allow a site access to shared 3rd party cookies, when the site supports the feature?
Based on Mozilla's documentation, it looks like CHIPS only applies to "cross site" cookies that are just accessible on different subdomains of the same site. A third party cookie could share data between a.site.example and b.site.example if it asked nicely, but not on site2.example.
If this isn't about it subdomains exclusively, it's not apparent to me. But it's all pretty confusing, and CHIPS appears to be just one minor thing that Google introduced when they were creating Privacy Sandbox back in 2022. (You know, to facilitate the total removal of third-party cookies, something they eventually backtracked on anyway.)
You can embed bits of a website in other websites, that's how 3rd party cookies exist