In accordance with an example embodiment of the present invention, a radio frequency identification (RFID) device comprises a first part (27) having an antenna (27), wherein the antenna is concentrating its radiation power in a main beam propagating in a particular direction (A). The RFID device further comprises a second part (21 ) that is configured to form a body of a portable device and it comprises a transceiver being connected to communicate with the antenna (27). The RFID device further comprises coupling means (25) that is configured to movably couple the first part (27) and the second part (21). The coupling means (25) is configured to move the first part (27) in relation to the second part (21) to the position, in which the antenna is oriented to transmit and receive radio signals to and from a radio frequency identification tag in the direction (A) where the main beam is directed towards the radio frequency identification (RFID) tag.
