Free startup idea: Anti-espionage cameras for corporate offices. Put it behind TVs and plants etc. and it will notify the security team if it detects new objects.
I'm sure employers will never use in-office surveillance monitoring for anything that resembles algorithmic labor management and exploitation
Certainly they would be transparent and very ethical with something like that
Now with extra-wide stereo audio feed, just in case they muble to themselves while doing their thing.
Won't that startup just be the spy in that situation
If designed well, it could be audited hardware with on-device processing.