A device or system for heating heat-transformable shape memory implants used in surgery applications. Transaction-specific data generated from a test bench simulation may be displayed in a sequence diagram view to provide a view of the transactions arranged sequentially in time. The pressure relief module 40 comprises: a first flow chamber 65 through which pressurised paint is provided to said supply pipeline 22; a second flow chamber 69 through which paint returns to said tank return pipeline 34; an orifice 42 interconnecting said first and second flow chambers; and a valve member 46 biased towards the orifice so as to block said orifice. Associations may be determined by recent associations with the wireless access point or by media access control address activity. Processing determines a respective received polarization for each of the at least one wavelength of the received signal, determines a respective calculated polarization transformation between the transmitted polarization profile and the received polarization of the respective wavelength, for each of the at least one wavelength,.