But the "hosting" party must click Accept to begin recording, thus they'd know they themselves were being recorded. In addition, at this point, the onus is on t

But the "hosting" party must click Accept to begin recording, thus they'd know they themselves were being recorded. In addition, at this point, the onus is on the recorder (as they were likely instructed in the Terms of Service they accepted), not the app, to ensure that the folks they're recording agree to be on camera/recorded.