>>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
One can do whatever to one's computer, it doesn't matter if one is still carrying a microphone in one's pocket the whole day and sleeping next to it too.