Turning on the camera on a Mac is vital for your video call. Here's how to do it on any Mac computer.

You can turn on the camera on your Windows computer immediately using the built-in Camera app, or another app that uses it.

You don't need your phone to open a QR code. You probably already know how to scan a QR code with your phone. It's simple enough: just open the camera app, point your phone at the code, and tap the ...