He also worries that techniques like this will cause lawmakers to insist that "client-side scanning" (where your device runs a program that scans it constantly for illegal content and uploads anything suspicious to the police) can be done in a "privacy-preserving" way. It's not true, but it's easy to see how bad-faith would-be spies could spin, "There is a way to do some AI stuff in a more-private way" to "there are no privacy risks with this other AI stuff."
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