HomeKit motion sensors are a vital accessory when building a smart home than runs by itself without manually turning devices on and off.

A HomeKit motion sensor doesn’t have to be just a motion sensor, though. You can use a HomeKit camera to act as a motion sensor even if it’s set to not record when people are at home.

Motion zones are an easy way to customize how your live-streaming security camera detects activity. Ring security cameras and doorbells let you create three detection zones for free.

They don’t work with sensors, or things that report a status. (Accessories often have sensors associated with them, like a light or motion sensor on a camera.) ...