You can even find the exact app in Finder-and perhaps remove it from your computer if it shouldn't have been running then. It then logs every time your camera and mic are being used, so you can go back and see if an app was on or using your video when it shouldn't have been. You can enable full notifications and sounds, too, to make sure you're away when they're on. It notifies you whenever your mic or camera are being used, with a small popover in the bottom of your screen. Or, if you tend to work with an external monitor that doesn't have its own camera, just close your laptop to work in private. You could do that-or check Amazon or eBay for a webcam cover for a surprising variety of little plastic covers that can cover your computer's camera until you need it. That's one way to make sure prying eyes can't see through your computer. Mark Zuckerberg made the news in early 2016 when he shared a picture of his laptop in Facebook's offices-and there was a piece of electrical tape covering his laptop's webcam. These apps will help you keep your mic and camera private, and make sure they're only turned on when you're ready to share. If you've ever worried about a call not really hanging up or wondered if your colleagues can hear you typing during a video call, it's time to fix that. When you're on a video call and sneeze on your monitor, you can't edit that out (nor can you mute it, since your computer's mute button mutes your speakers–not your mic).

Laptop built in microphone