Patent ID: 7925449

Claim:
A method comprising: measuring, via an octane analyzer that is integrated into a fuel pump, an octane measurement of a fuel sample while a stream of fuel is being dispensed from the fuel pump into a vehicle, wherein the fuel pump comprises a nozzle and a collar that is disposed over the nozzle, wherein the collar comprising at least one infrared (IR) emitter and at least one IR receiver disposed circumferentially about the collar, in which the at least one IR emitter transmits the octane measurement to the at least one IR receiver; rounding, via the octane analyzer, the octane measurement to a nearest recognized octane rating; comparing, via the octane analyzer, the rounded octane measurement with a listed octane rating for the fuel sample; and determining, via the octane analyzer, that the rounded octane measurement fails to match the listed octane rating for the fuel sample; communicating, via the octane analyzer to a user, an indication of an error in the listed octane rating for the fuel sample; computing, via the octane analyzer, a compensation for the user, based in part on the error; and reducing a price of fuel with the compensation.