Abstract: A system and method for warm body presence detection, the system comprising a detection unit comprising a light focusing unit for absorbing light from an inspected region; and a thermal detection unit for receiving the absorbed light, sensing infrared radiation and generating a signal indicative of the sensed infrared radiation; and a processing unit for analyzing the generated signal and deciding based on the analysis whether a warm body presence has been detected. The method for warm body presence detection comprises receiving and analyzing by a processing unit inputs from a short wavelengths thermal detector and a long wavelengths thermal detector, the inputs comprise indications of the amount of emitted infrared radiation in the respective wavelength ranges inspected by each thermal detector, and deciding that a warm body presence has been detected in case the emitted infrared radiation values detected by both thermal detectors correspond to predefined values.