First the obvious-in-retrospect fail. [Richard] built a board with a temperature sensor and an ESP8266 module to report the temperature to the Interwebs.

If you manage all that, you'll get a body temperature reading that you can save to your Fitbit profile. We found the temperature sensor to be the biggest negative mark in our Pixel 8 Pro review.

Eight months since the Galaxy Watch 5 series went on sale, Samsung is finally activating the wearable's temperature sensor, but it may not benefit you.