So after thinking a lot about FLOC and how it impacts and changes the advertisement environment, I have more questions than answers.
And at least from my current understanding, it becomes worse for organisations that want to advertise, which might includes your government trying to educate citizens about things, while not really making things much better for individual privacy, due to the ability to correlate cohort IDs to identify users.
While a lot of people decided to set a header to opt-out from FLOC tracking for their users, I decided to embrace it and let people make up their own mind.
For those interested in the banner, here are the implementation details:
It's kept simple and efficient. It'll only show up, when your browser implements the API. Enjoy!
I just realised that implicitly I built a FLOC tester :D
Want to check if your browser implements FLOC? Just go to https://shivering-isles.com and if a banner shows up warning you about FLOC, your browser is affected. Amazing!
Related: if you want to test if the detection works, you can use the following command in (Fedora) Linux with #chromium:
`chromium-browser "--user-data-dir=$(mktemp -d)" --enable-blink-features=InterestCohortAPI --enable-features="FederatedLearningOfCohorts:update_interval/10s/minimum_history_domain_size_required/1,FlocIdSortingLshBasedComputation,InterestCohortFeaturePolicy"
(It'll enable the feature in a temporary profile that is used until you terminate the command)
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