I have a piece of black duct tape over my webcam because I’m not retarded, but your software ran a scan and said "Hello! Someone could be watching! I’m like no, I have a big piece of duct tape over my webcam because I’m only semi-retarded, but then you try and extort money out of me over it.
Well, I doubt that any software product could detect your (smart!) “hardware” solution. 
I have a postit Arrow over mine, that however doesn’t stop then trying and allied to trying to use your web cam they would probably try to access the microphone.
However, I don’t find either to be a concern.
Why else would we bother to have an antivirus installed but to prevent malware getting on to our systems 
After all isn’t it meant to prevent external malware getting on to our systems.