I do not know if it is because of the technology in general, but the measurement results always traditional values that differed 1-2 degrees apart. And this directly from measurements in a row! Controlled by a conventional thermometer, the temperatures were never properly (the Beurer shows like fever, even if you have none!).
Absolute no-go: after about a week and repeated test measurements, the color dissolved in the round "Scan" button! This must not happen!
Therefore, the unit went back again and we remain with the classical thermometer.