Patent ID: 8464905

Claim:
A method of operating a dispensing unit, comprising the steps of: entering a first active state, wherein if there is motion within a sensory path of a sensor of a dispensing unit the following steps are taken: detecting the motion; initiating a first pattern activation sequence comprising: releasing a volume A of material from the fluid container; releasing a volume B of material from a fluid container, subsequent to the release of the volume A of material from the fluid container; wherein the motion sensor is deactivated during the first pattern activation sequence; entering a second active state upon completion of the first pattern activation sequence, wherein if there is motion within a sensory path of a sensor of a dispensing unit before the lapsing of a time period P, the following steps are taken; detecting the motion; initiating a second pattern activation sequence comprising: releasing a volume C of material from the fluid container; releasing a volume D of material from the container, subsequent to the release of the volume C of material from the container; wherein the motion sensor is deactivated during the second pattern activation sequence; wherein volumes A, B, C, and D are not all the same; wherein upon entering the second active state, if there is no motion within a sensory path of a sensor of a dispensing unit before the lapsing of a time period P, the following steps are taken: initiating the first pattern activation sequence.