Abstract: A sensor incentive method provides a sensor adapted to function with an installed base of conventional physiological instruments. An incentive is associated with the sensor in connection with a sensor purchase. The incentive is applied to a qualified physiological instrument purchase so as to motivate or otherwise enable the upgrade or replacement of the installed base with advanced physiological instruments. The accumulation of multiple incentives may also apply to the purchase. In one embodiment, a coupon is associated with the sensor purchase, the coupon having a monetary value applicable to the purchase of advanced physiological instruments. The coupon is redeemed for the monetary value during the qualified purchase. Multiple coupons may be accumulated and redeemed for the monetary value times the number of coupons.