Apple’s HomePod mini has a secret sensor waiting to be switched on

The sensor, measuring 1.5 by 1.5 millimeters, is buried in the bottom edge of the HomePod mini’s plastic, fabric-wrapped case near its power cable. — Apple

Apple Inc’s HomePod mini speaker launched last November with new features such as a home intercom system. But one part of the device has remained secret: a sensor that measures temperature and humidity.

The Cupertino, California-based technology giant never disclosed this component and the device currently lacks consumer-facing features that use it. The company has internally discussed using the sensor to determine a room’s temperature and humidity so internet-connected thermostats can adjust different parts of a home based on current conditions, according to people familiar with the situation. The hardware could also let the HomePod mini automatically trigger other actions, say turning a fan on or off, depending on the temperature.