Somebody may have already posted about this (see here), but inspired by my live session in Fedora, I would like a button to easily enable/disable the camera and microphone in the privacy settings.
When I was using Windows, I had a special app that does exactly that.
I use the function combination to disable them. You may want to check if they exist in your keyboard (if it's a laptop). You may also be able to create a macro or alias to perform these tasks on a keyboard shortcut.
On the laptop you have the f keys. Next to the number is an image. Depending on if your system is set up with fn lock on or not, when you click the fn key (to one side of the spacebar) and the corresponding f key picture (microphone exed out is mute) it performs that function or initiates whatever that f key is programmed to do in the os or application (f1 - help, f11 - full screen window. F9 - save game/application). The picture ones are what you are attempting to implement. Try the volume up and down combos to see which happens with and without the fn key.
But I often use the camera when I have my meetings. I don't want to go through the pain of peeling the tape off and putting it back on when I'm finished. The same goes for an external webcam.
I have used (and bought) a little cheap plastic cover here in the USA that sticks over the camera and has a sliding cover that slides to hide the camera and slides the other way to allow the camera to see.
Cameras are controlled by the uvcvideo kernel module.
You can disable the camera until reboot by opening a terminal and typing sudo modprobe -r uvcvideo. You will be asked for your password, and after typing it, if there are no errors shown in the terminal, your webcam should be disabled.
If you got the error message: modprobe: FATAL: Module uvcvideo is in use. after trying to remove the uvcvideo module, you can try to force its removal with the following: sudo rmmod -f uvcvideo (thanks thiagowfx)
To enable your webcam again, type sudo modprobe uvcvideo into terminal.
Any tweaks that are needed makes gnome shell extensions first port of call. You will need to have gnome-tweak-tool installed first though.
sudo apt-get install gnome-tweak-tool
If it does not show up in the Extensions menu of Tweaks then ask Team Zorin to allow access to other extensions as I posted elsewhere on a different issue that the download new extensions not available in Zorin 16 was available in Zorin 15.x.
Did you add the gnome extension addin to firefox? After install from web page you should see on off switch for the extension. Switch to on and see if it shows up in the panel.
Don't think I've ever tried that method.
I've PM'd AZorin for guidance on rhe changes on extensions not working with Web Browser integration and lack of "get more extensions" in Tweaks.