In a pedometer device for detecting and counting steps of a user on foot, an accelerometer sensor detects a vertical acceleration generated during the step. A fluorescent colorant is injected near a tumor, and after a predetermined period of time an abdominal operation is performed and stimulating light is projected onto the area being examined. A redundant logic output is generated from a redundant logic gate that duplicates the primary logic output in response to the input if an SEE is not present. The method can further include determining, via one or more processors, that the handheld computing device is in proximity to a wagering game machine matching the player preferences. The coating material is injected into the plasma stream and is applied to a target surface. A spiraling ramp is fixed to one leaf, and engaged by a member fixed to the other leaf, wherein the member and the ramp move relative to one another as the upper leaf is moved from the closed position to the open position, and when the upper leaf is moved from the open position to the closed position.