if the customer cellular telephone 140 is based on secure digital communication protocols the intrinsic security afforded by such protocols may obviate the need for the fuel dispenser 220 to handle sensitive pin information for example the fuel dispenser 220 may eliminate the pin entry and encryption hardware from its customer payment interface 286 relying instead on a digital cellular telephone 140 for transfer of pin information to an authorization network elimination of the pin handling hardware from a standard fuel dispenser 220 has increasing viability given the growing prevalence of cellular telephones of course a fuel dispensing system based on the present invention may retain secure pin entry capabilities at the fuel dispenser 220 as a convenience to those customers lacking secure digital cellular telephones fig2 b depicts the preferred embodiment of the present invention applied to a fueling environment the system generally referred to by the numeral 200 in the preferred embodiment the site controller 112 cooperates within the ikd 130 as described in the relationship between the pos 110 and ikd 130 in fig1 b the fuel dispenser 220 transfers select site information to the cellular telephone 140 as described previously the cellular telephone 140 transfers this information.