> This could be achieved using a USB dongle. What stops one from selling access to that USB dongle over the internet, anonymously doing thousands of verificati

> This could be achieved using a USB dongle. What stops one from selling access to that USB dongle over the internet, anonymously doing thousands of verifications per second, cardsharing[1] style? With Google Play Integrity Protection, each such verification needs a human physically clicking buttons on the device, which makes things much harder. [1] https://en.wikipedia.org/wiki/Card_sharing https://en.wikipedia.org/wiki/Card_sharing