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So they “reinvented” HTTP cookies but with only advertisers? > Technically, the way it works is that a script running on a site with ads asks the browser to re
by AndrewKemendo 5mo ago
So they “reinvented” HTTP cookies but with only advertisers?
> Technically, the way it works is that a script running on a site with ads asks the browser to record an ad impression. Then the browser keeps a record of ads seen from all the sites you visit. Later, when you buy something, the retail site can ask the browser to generate a “conversion report” that can be passed to a centralized aggregation service.
- gruez 5mo agoMore importantly it's privacy preserving because it doesn't allow for bidirectional communication, which third party cookies could do.
- Ajedi32 5mo agoSort of. Cookies track you as an individual with a unique identifier. The conversion report only tracks anonymized aggregate statistics that can't be used to identify you as an individual.
- deleted 5mo ago[deleted]
- troupo 5mo ago> The conversion report only tracks anonymized aggregate statistics that can't be used to identify you as an individual. Combined with the other 200+ tracking points from your machine... Yes, yes you can be identified.
- xmcp123 5mo agoThis sounds a lot like “you’re getting analyzed by AI/ML, tied to a specific bucket of similar users, then your continued data expands the bucket, splitting off into different adhoc buckets of similar users” If so, you can’t be tied to a specific purchase but you can be so tightly grouped it’s basically the same.
- shostack 5mo agoLook up differential privacy. Done right, it is impossible to do what you said.