Comet has three hardware kill switches - WiFi, camera, microphone. They don't just toggle a software flag. They physically cut power at the circuit level.
Replying to @mechasystems@fosstodon.org
@mechasystems I think you are one step away from designing a real Linux smartphone like Librem 5, but at an affordable price. I would love for this to happen soon. I wish to Comet success too!