Transmitter for transmitting a secure access signal

A device configured to transmit a secure signal to a system for performing a secure transaction, the device comprising:

• a biometric sensor;
• a display;
• a selector through which a user input is received;
• at least one proximity circuit;
• and
• a controller which is operated to:
• receive, via the biometric sensor, input of a biometric signal;
• perform a matching process, thereby to match received biometric data extracted from the received biometric signal with stored biometric data from a biometric signature contained in memory of the device, wherein a database of biometric signatures is maintained in memory of the device, and wherein the biometric sensor of the device was used to enroll the biometric signature contained in the memory of the device;
• present data representative of a plurality of financial accounts on the display;
• receive, via the selector, user input indicative of a selected financial account selected from the plurality of financial accounts presented;
• present, via the display, feedback indicating the selected financial account;
• and
• generate data including a serial number unique to the device and a unique dynamic code for the secure transaction, wherein the unique dynamic code is unique for the secure transaction, and cause the at least one proximity circuit to transmit a secure signal conveying the generated data to the system when the proximity circuit is placed within range of a radio frequency field emitted by the system;
• wherein the system is configured to, in response to receipt of the secure signal, communicate with a back-end host server thereby to perform the secure transaction, including transmission of the generated data including the serial number unique to the device and the unique dynamic code for the transaction;
• wherein the secure transaction is performed based on verification of the secure transaction data including the serial number unique to the device and the unique dynamic code by the back-end host server, wherein the unique dynamic code is unique for each transaction.