>>xairy+(OP)
Arguably a much, much bigger problem are the (many) microphones of modern devices.
These usually get neither an LED nor a switch, and unlike cameras can't easily be covered, nor pointed away from potentially sensitive topics/subjects.
>>lxgr+T2
At the same time we're at a point where synthesizing your voice is getting more trivial everyday, you need only a few seconds of it and you can be made to say whatever someone wants.