A method of monitoring the expenses of a traveller during the progress of an itinerary utilises NFC for carrying out the financial transactions associated with the itinerary and updates a corporate ERP or similar financial database with the financial transactions as they occur allowing rapid allocation to cost centres. The itinerary may be laid out in terms of itinerary events, each of which may be tracked by an NFC connection with an NFC device at an expected location and date for the itinerary event.