It's not frequent, but the desired number of times is 0 :) There's been a few times that my camera has activated in a meeting, and shown a black screen because

It's not frequent, but the desired number of times is 0 :) There's been a few times that my camera has activated in a meeting, and shown a black screen because of the cover. My Lenovo Ubuntu machine has cover built into the casing, which seems ideal. For my Macbook, I use a thin (<.1mm) plastic sliding cover.