I have personally turned on the camera without the indicator light coming on on a 2012 Macbook Pro 15" with double-digit percent success rate, meaning someone w

I have personally turned on the camera without the indicator light coming on on a 2012 Macbook Pro 15" with double-digit percent success rate, meaning someone with more time / expertise could probably do it consistently. I have been unable to do it on newer 15" pros or other models (Air / pro 13").