METHOD FOR IDENTIFYING A PASSIVE RFID CARD

The invention relates to the field of RFID cards, particularly to a method for identifying an RFID card as a passive RFID card (20) or an active RFID card (30). The method comprises the steps of: sending a first RFID command, while keeping an RFID field on; receiving, from each of the at least zero passive RFID cards (20) and the at least zero active RFID cards (30), a corresponding first answering signal; populating a first list (L1) with each corresponding first answering signal from the at least zero passive RFID cards (20) and the at least zero active RFID cards (30); sending a second RFID command, wherein the RFID field is paused for a predefined pausing period (T1, T2) after sending the second RFID command; receiving, from the at least zero active RFID cards (30), a corresponding second answering signal; populating a second list (L2) with each corresponding second answering signal from the at least zero active RFID cards (30); comparing the entries of the first list (L1) with the entries of the second list (L2); identifying each of the at least zero passive RFID cards (20) by having its corresponding first answering signal in the first list (L1) but not in the second list (L2).