Oh god please no, I hate having to deal with recaptcha enough already (and that's just the visible recaptcha version), I really don't want to worry/deal with another variant as well.

Each call to an API will reveal more about a user. “Websites can call APIs until those calls have revealed enough information to narrow a user down to a group sufficiently large enough to maintain anonymity”, said Schuh. Any further attempts will be blocked, however.

I'd be interested in how that is decided, and how those calls are shared beyond the first call.

Also this bit was fun:

But Rhodes said there were some good things to come from the proposal. He said “cross-device tracking” of users should be easier through a browser-based solution, “because if you’re in Chrome you’ll be signed in to Chrome across all your devices I would assume.

“So if you watch an ad on Youtube, click through on your phone, and then buy that holiday later on your desktop, at the moment it’s actually quite tricky for us to know that that [ad] has had any impact, or have data which suggests that’s had an impact, whereas with browser-based tracking you can at least do that.”

He added: “It should be easier to track what people do, so from Google’s perspective it’s easier for them to have a better understanding of who you are, which ultimately leads to a better ability to buy advertising. But all of that’s wrapped up in the fact that it’s provided by Google.