With the Filac™ FasTemp™ Electronic predictive thermometer, you no longer have to choose between speed and accuracy. Filac™ Advanced Sensing Technology - the "FAST" System - is patented technology smart enough to target a precise temperature by searching for and analyzing trends that are unique to a patient's individual body site. Accurate measurement times are as fast as four seconds for oral readings and 10 seconds for axillary and rectal readings.