FeverDots

The FeverDot consists of a black thermochromic coating over a sticker substrate. The color remains black on cooler surfaces and turns to purple and then to bright pink as temperature increases. Forehead temperature is generally one degree cooler than core body temperature. However, when the internal body temperature rises, so does the forehead surface temperature. The color of a FeverDot begins as black or purple, but quickly takes on red tones as its temperature rises. At 99°F the FeverDot is bright pink indicating an early sign of a raised temperature.