A terminal software architecture accepts a card that implements a card application of a merchant. The dispenser system includes a dispenser bottle, a dispensing cap, a pre-filled container, an optional inversion tube wherein the pre-filled container contains flowable contents therein for dispensing when a dispenser bottle is squeezed, pumped or sprayed. The allowed region is set if the reduced accuracy of white line detection, due to the thermal noise generated in the solid-state imaging sensor, falls within an acceptable range, and the disallowed region is set if the reduced accuracy of white line detection falls outside of the acceptable range.