Motion detection is the magic ingredient in the current wave of do-it-yourself home security cameras. Thanks to built-in sensors that vigilantly monitor their field of view for movement, you can ...

Additional WiFi sensing applications Since WiFi sensing technology requires no additional hardware or subscription fees, it is much more affordable than other motion detection solutions. It can be ...

A hidden ultrasound motion detector. That’s right, your Amazon Echo isn’t just listening to the commands you give it, it also has integrated technology that can sense if you’re in the room.

Kangaroo’s new sensor (we’ve previously reviewed its motion-only sensor) makes for an enticing choice given its no-tools, no-hub setup, not to mention its $30 price tag.

Origin Wireless, on the other hand, found a way to make use of WiFi signals bouncing around a room to detect even the slightest movement -- down to something as subtle as a person's breathing rate.

Maybe you want to detect a man-sized change — something that affects 50% of the pixels in an area of interest, but you don’t want to respond to a mouse running across the floor.

This sensor will work with Alexa, Apple Home, Google Home, Home Assistant, Homey, and SmartThings. Aqara invented the presence sensor, the FP1, back in 2021. They released the FP2 in 2023.

The $230 Ring Battery Doorbell Pro is its first battery-powered buzzer with 3D motion detection, but it looks just like all the others.

my ally is the Force, and a powerful ally it is From Wi-Fi to Spy-Fi—we test Plume’s new motion detection feature Superpods can now sense disturbances in the Force—er, the RF spectrum, that is.