Except if you think about it, this is possible with smartphones too. They have cameras in the front and the back. The phone just has to be vertical. But docks and holders take care of that. The only thing left is the camera to be recording. Sure there are permission systems. But they're all software. No physical switches or indicators for safety. You won't know even if it's recording. And if it's recording, it will uploading it just as easily. We're addicted to a spy device.