CORE uses a thermal energy transfer sensor from greenTEG in combination with a sophisticated AI algorithm to calculate the Core Body Temperature.
The AI algorithm calculates the Core Body Temperature with the highest accuracy in comparison to other technologies.
Due to greenTEG's sensor, this technology has a high accuracy even in a not controlled environment (e.g. under the sun, during intense physical activity, and within a large range of ambient temperatures and humidity)
Here's a video by our product manager Chris, describing the basics: