

If I understand it correctly it would be something that certain websites chose to add.
If a website add this new captcha you wont be able to access the website without a verified android (and I suppose apple too) device.
The device with google play would be use as a way to verify, no matter the device used to browse that website.




What stops a bot to just run an android emulator to scan any prompted qr?
This would only track if we read the small letter of the proposal. That this only work on android devices which have verified identify signed within their account. Meaning that android would require id verification, aka upload your id to google.