METHOD AND DEVICE FOR PERFORMING A CHECKING OF A PERSON BY MEANS OF INFRARED RADIATION AS WELL AS A MOTOR VEHICLE HAVING SAID DEVICE

A method for performing a checking of a person, such as a vehicle passenger, by way of infrared radiation involves determining the distance between a source of infrared radiation and the person by way of light according to a distance definition and setting the intensity of the infrared radiation in dependence on the distance as determined.