A security token (1) is provided comprising a secure crypto processor (2) and a plurality of hardware and/or software components arranged to enable communication using a plurality of wireless communication technologies, e.g. Near Field Communication, Bluetooth, RFID, or iBeacon. Communication is only possible when the token is within a predetermined range from a processing device with which it communicates. The invention allows secure verification of a user's identity. Thus, it provides a secure authentication solution which is particularly suited for financial payment processes.