The embodiments of the invention relate to a method for controlling a read-out of a radio frequency identification unit (IU). The method contains the steps of determining propagation information (PI1, PI2, PI3) of a movable apparatus (EPV1) which contains the radio frequency identification unit (IU) or a radio frequency identification reader (PM), and adapting based on the propagation information (PI1, PI2, PI3) an output power of the radio frequency identification reader (PM) for reading out the radio frequency identification unit (IU). The embodiments of the invention further relate to an apparatus (CA) for controlling a read-out of a radio frequency identification unit (IU). The apparatus (CA) contains means for determining propagation information (PI1, PI2, PI3) of a movable apparatus (EPV1) which contains the radio frequency identification unit (IU) or a radio frequency identification reader (PM), and means for adapting based on the propagation information (PI1, PI2, PI3) an output power of the radio fre
