Method and system for monitoring secure application execution events during contactless RFID/NFC communication

A system for reliable monitoring of secure applet events, the system incorporated in a mobile device, the system comprising:

• a Near Field Communication (NFC) modem operable to communicate with an NFC reader, the NFC modem communicating information associated with transaction events;
• a secure controller coupled to the NFC modem configured to run an applet, the secure controller including a central processing unit and a messaging mechanism, the secure controller programmed to provide secure application execution and secure data processing, monitor applet state transitions caused by the transaction events, and generate notifications of the applet state transitions and statuses of the transaction events responsive to the applet state transitions associated with the transaction events;
• and
• a mobile host processor coupled to the secure controller, the mobile host processor programmed to receive the notifications of the applet state transitions associated with the transaction events and display the status of the transaction events through a display of the mobile device,
• wherein the applet state transitions comprise one or more of:
• a request to make a payment;
• an enablement of the payment;
• a cancellation of the payment;
• a confirmation of the payment;
• and
• a completion of a transaction,
• wherein the secure controller generates a hardware interrupt or a message for indicating a completion of data transaction and the secure controller is further programmed to respond to a timer timeout to generate a hardware interrupt signal for an event completion.