This API also works on the desktop. In fact, you can't use this system without a phone if your browser isn't Google enough.

We are going to see sooooo many scams out there. No wonder Google is locking down third party Android apps outside of their control, getting a user to install "device verification.apk" will become super trivial after people have clicked through these popups a couple times.

That war was lost in the 2010s, around the same time as the vertical video war.

And also don't install apps? What's left then?

Phone is small computer

well that just seems counterproductive and unreasonable but it's Friday so what do I care

-- sent from Chrome on Android

and it seems Google wants to support people like you!

That entire QR barcode thing is so that you can browse the web on your laptop/desktop, and _still_ rely on smart phone's attestation, no mobile browser needed.