These tiny devices are smart-home helpers. They detect and alert you about motion, temperature, or open or closed doors and windows — and can tell other smart devices to act.

If that's your goal, you may need to consider dedicated motion sensors. With all that out of the way, here's how to set up person detection and how to use it with Alexa routines: ...

But in order for it to work with your devices, you'll need to have a WiFi connection established. Here's how to get it done, whether you're using the Alexa app or the Alexa website.

Amazon's Echo and Echo Dot can now detect when people are in the room, which is perfect for triggering Alexa routines. Here’s how to take full advantage.

Security cameras can be invasive inside of the home, which is why Home Hex offers an intriguing alternative with motion detection through Wi-Fi.