Yes it does matter. I have camera covers for my phone and laptop. In terms of microphones I keep the phone and laptop away from me when I have conversations about politics. Call me paranoid but we know that the potential for listening in is there and I just don't know who is recording what. Remember that only two generations ago my German jew grandparents were put in camps. I don't live in a constant state of fear or anything like that, these precautions have just become habit.