NFC device, operating method and computer program

A method of operating a near field communication, NFC, device, the NFC device comprising a communication unit, a processing unit, a profile determination unit and a card selection unit, the method comprising:

• communicatively coupling the communication unit to an NFC reader;
• determining, by the profile determination unit, a polling profile of said NFC reader, wherein the polling profile represents a sequence of predefined radio frequency, RF, transmission events, and wherein the profile determination unit determines said polling profile by comparing a detected sequence of RF transmission events with one or more predetermined sequences;
• selecting, by the card selection unit, a specific one of a plurality of emulated cards in dependence on the polling profile determined by the profile determination unit;
• and
• using, by the processing unit, the specific emulated card for executing an application, wherein the profile determination unit comprises a detector and a comparator, and wherein:
• the detector detects the sequence of predefined RF transmission events when the communication unit is communicatively coupled to the NFC reader;
• and
• the comparator compares the detected sequence of predefined RF transmission events with the predetermined sequences and outputs one of said predetermined sequences as the determined polling profile, and wherein the detector detects the number of predefined RF transmission events and the periods elapsing between said predefined RF transmission events, and wherein the comparator compares both said number and said periods with corresponding numbers and periods of each of the predetermined sequences.