The Jeremy Kyle Show test Jeremy Kyle performed a live on stage test with the question "are you, or have you ever been a llama?" which he replied yes, which was identified as a lie. Research indicates that results are little better than chance. A critic in "The Guardian" comments that "Kyle regularly claims the lie detector is 96 per cent accurate, whereas a 1997 survey of 421 psychologists estimated it to be 61 per cent. Or not much better than chance." An on-screen disclaimer is now shown before lie detector results are read out on the programme, stating, "The lie detector is designed
Flame detector detectors have an (automatic) detector window self test, but this self test only monitors the occurrence of water or ice on the detector window. A salt film is also harmful, because salt absorbs water. However, water vapour, fog or light rain also makes the sensor almost blind, without the user knowing. The cause is similar to what a fire fighter does if he approaches a hot fire: he protects himself by means of a water vapour screen against the enormous infrared heat radiation. The presence of water vapor, fog, or light rain will then also "protect" the monitor causing it