Forehead thermometers provide a quick and sterile way to assess an individual’s temperature. They use infraredTrusted Source sensors to measure temperature. They may be easier to use than other thermometers with children and when assessing large groups of people quickly. This article examines the accuracy of forehead thermometers compared with other types of thermometers. It also looks at how forehead thermometers work, how to use them, and the best way to take a person’s temperature.