An implantable cardiac stimulation device is equipped with an accelerometer-based sensor to sense a patient’s movement and produce a vertical acceleration component indicative of a patient’s acceleration in a vertical direction. A step may be carried out to pay a sum determined by the wager and the predetermined odds when the predicted outcome matches the randomly selected actual outcome. A reagent layer is disposed in the sample chamber. This process allows a display panel to be produced with fewer bakings and reduced yellowing. This system does not penalize airflow into the system as the flow passage does not require reduction in size to the air passage.