I mean, you know how everyone carries a phone these days? If you use your voice, it could be potentially recorded.
So… we could just use sign language. Teach everyone sign language, use that whenever you wanna say something anti-government.
Its much easier to cover up cameras (or move out of sight) than to cover up microphones. And its unlikely people would want to leave their expensive phone in another room out of sight, so teaching everyone sign language seems like a straight-forward option.
Also, bonus: its very helpful for people with hearing problems if everyone knew sign language.
You can see much much further than you can hear.
You can presumably walk out of earshot. You have to go VERY FAR before you’re out of camera shot for even consumer cameras.
It’d be interesting if there was a multi-modal device-to-device communication protocol, so that you needed both line of sight and be within audio range to be able to pick up the conversation.
Although just record them typing at that point so never mind.