A method using a safety system for localizing a person and/or object in a monitored zone having a control and evaluation unit, having at least one radio location system for the position determination of the person and/or object in the monitored zone, wherein the control and evaluation unit is configured to evaluate position data of the radio location system and status information of a spatially resolving sensor and, if a person and/or object is/are determined in the monitored zone by the radio location system, the control and evaluation unit is configured to set the spatially resolving sensor into operation at a non-reduced safety level and, if no person and/or no object is/are determined in the monitored zone by the radio location system, the control and evaluation unit is configured to set the spatially resolving sensor into operation at a reduced safety level.