i suppose what he means is that the phones of protestors which have signal chat will be investigated.
Assuming they dont have disappearing messages activated, and assuming any protestors willingly unlock their phones.
Or has biometric login turned on and didn't lock their phone behind a passcode before being arrested.
There are already people on X who have infiltrated chats and posted screen captures. Getting the full content of the chats isn't going to be difficult. They have way to many people in them.
Unlocking isn't necessary, We've already seen that Apple and Google will turn data over on government requests.
https://www.businessinsider.com/apple-complies-percent-us-go...
Unfortunately not everyone in a group chat may be fully vetted, in which case they could be feds collecting "evidence". Some chats may have publicly circulating invite links.
But any judge that doesn't immediately reject such cases on a first-amendment basis is doing the business of an authoritarian dictator. This is fully protected speech and assembly.
> willingly unlock their phones
Or they are running any mainstream iPhone or Android phone, they've unlocked the phone at least once since their last reboot, and the police have access to graykey. Not sure what the current state of things is, since we rely on leaked documents, but my take-away from the 2024 leaks was GrapheneOS Before First Unlock (BFU) is the only defense.