Nikita Kuzmin, a professional dancer on Strictly Come Dancing, wears a white patch on the back of his arm called a Libre sensor. This sensor is used to monitor his blood sugar levels and takes the place of the traditional fingertip prick method many diabetics use. Nikita was diagnosed with type 1 diabetes as a child and has been praised for revealing the sensor to viewers on the show, helping to raise awareness and normalizing the use of such devices.