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Comment by amichal | Hacker News Reader

Not just Facebook, lots of folks do this.

I was reading an news article on my phone on NYT just yesterday while someone else in the house was buying things from a big online clothing store (not amazon) on her phone at the other end of the couch. In real time the ad slots on the article on my phone switched to show ads for the site she was buying from and for similar products. The had previously been showing me something i bought a few days ago.

View on HN

I have 2 Youtube accounts on which I watch completely diffent types of videos. One is on Chrome, the other inside a Firefox Container. When I do a google search or just browse something in Chrome, the YT account inside FF will recommend me videos related to the search / browsing, even if they're not at all related to the videos I watch on that account. The YT account on FF will also regularly suggest me videos related to the ones I watch on my Chrome YT account.

The reverse doesn't happen: my DDG searches and FF browsing never bleed on Youtube.

Google (and many others) doesn't care about private mode, separate accounts, profiles or containers.

This is because it's IP based tracking.

And people, even on HN, constantly say I'm being "behind the times" and "overly paranoid" when I point out how happy I am to still be on IPv4 with an address that changes every few days or when I restart the router.

IPv6 != static addresses. My IPv6 prefix changes at least once a day too.

Technically possible, of course, but that’s the first time I’ve ever heard of that happening.

Every single ISP available to me advertises it as a feature: “get fixed IP for free when you use IPv6 (usually $5/month for IPv4)”. When I asked if there’s non-fixed IPv6 they were perplexed at my request and said no.

Prefix changes every 12hrs here, no matter what.

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