Disclosed is a portable mobile communications device 100 and method that can create and store a transaction log of data exchanged over a near field RF communication system. A near field RF communication data transaction is performed 320. A transaction log record 400 of the just performed near field RF communication data transaction is then created and stored in a transaction log database 240. A transaction log record 400 is created by obtaining data pertaining to the transaction that uniquely identifies the transaction and its context and filling fields of the transaction log record with the relevant data obtained. The transaction log database is made accessible to the user for review and manipulation.
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