Abstract: A communications device has a near field RF communicator (15) having a coupler (17) to couple with a coupler of a near field RF communicator or NFC communicator in near field range to enable communication of data between the communicators by modulation of a magnetic field, and a modulator (43) to modulate an RF signal in accordance with data to be communicated by the near field RF communicator. The device also has at least one secure element (31) separate from the near field RF communicator (15) to provide secure data storage for transaction data representing or relating to a transaction.

Abstract: Data communication apparatus comprises a master unit (2) and at least one physically separate, passive slave unit (4). The master unit (2) has a first part (29) of an inductive communication system, and a processor (20) connected to the first part of the inductive communication system. The slave unit has a second part (40) of the inductive communication system, a data store (48), and a modulator (44,49) responsive to data from the data store and connected to the second part (40) of the inductive communication system. The first and second parts of the inductive communication system (29,40) are constructed so that when the slave unit (4) is brought into proximity with the master unit (2), power is inductively coupled from the master unit to the slave unit via the inductive communication system. The modulator (44,49) in the slave unit (4) is thereby activated to cause data from the store (48) to be inductively communicated from the slave unit (4) to the master unit (2) via the inductive communication system.