Feels like something a third-party password manager could handle. I would not expect Apple or Google to ever do this on their own initiative though. In fact the

Feels like something a third-party password manager could handle. I would not expect Apple or Google to ever do this on their own initiative though. In fact they would probably disallow the third-party app from doing it, as it would likely violate some term of service or other. Neither Apple nor Google has any incentive to make it easy to pollute data, or foster the expectation that you have a right to obfuscation. If you started expecting it from apps you installed, I think you'd eventually start to expect it from Apple and Google themselves, and that'd be bad for them.