To joke about this absurd situation, I would say it would be a lot easier to go find the user yourself face-to-face and validate his or her data. To paraphrase

To joke about this absurd situation, I would say it would be a lot easier to go find the user yourself face-to-face and validate his or her data. To paraphrase what @js4ever said, it would make sense to implement it yourself in your backend than depend on Google Sign In. @jraph, I completely agree with you; it happened to me and stopped using Google, apart from an email I have for my mobile apps and that is rarely used.