You know when you have to join a Zoom call but want to check your face first, or make sure nothing too embarrassing is in frame? And so you open Photo Booth or something? But that's like 5 keyboard-presses at best? Maybe a one-click thing might save you half a second or something? Why not just open Photo Booth instead?
It's a macOS app that lives in the menu bar, and when you click on it you get a view from your camera.
