The present invention provides a portable processing device comprising a journey type determining module a journey length determining module and a communication module. The journey type determining module is operable to determine whether a journey undertaken by a person carrying the portable processing device is an environmentally friendly journey comprising a journey undertaken in an environmentally friendly vehicle a journey undertaken using self propelled means or a journey undertaken on foot. The journey length determining module is operable to determine a length of a said environmentally friendly journey undertaken by the person carrying the portable processing device. The communication module is operable to transmit journey data to record management apparatus defining the length of the environmentally friendly journey undertaken by the person carrying the portable processing device.
