While taking in-ear temperatures can be a little more accurate, contactless readings taken on the forehead are a great way of taking your child?s temperature without disturbing or distressing them, built-in artery scan function uses infrared technology to ensure the most accurate contactless reading possible (when used in accordance with the below user instructions) While forehead readings are a great way of taking initial temperatures without disturbing or distressing your child, taking temperature readings in the ear can more accurately reflect the core body temperature (the temperature of vital organs in the body), as the ear drum shares tri-colour fever alert system the 4 in 1 contactless thermometer has a tri-colour fever alert system, helping you to better understand what your child?s temperature means. once the temperature has been taken, the screen will display the reading and will either turn green, amber or red. New-born babies are not able to regulate their own body temperat