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>How many people know that iOS devices will default to Siri reading plaintext for all apps, including E2EE messengers?

Is there more on what Siri "learn from app" actually does? Does it scrape entire screen contents? Or just metadata? Or only what the app developer decides to send?

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My understanding is that the "learn from app" setting relates to it watching out for NSUserActivity, which is something the app developer has to explicitly send out. The app developer is motivated to do so because NSUserActivity powers a lot of system-integration features.

https://developer.apple.com/documentation/foundation/nsusera...

Apple can change this silently in the future, as long as it remains compatible with their T&C.

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