Vertical cavity surface emitting lasers are disclosed, one example of which includes a substrate upon which a lower mirror layer is formed. Pressure sensors positioned in the fuel flow path detect pressure in the fuel flow path and communicate pressure signals to a control system in the fuel dispenser. The device detects a traffic shaping rules violation by an offending node in the set of network nodes. An application stored in the contents memory unit is displayed. In other exemplary embodiments, receiving instructions to alter the adapter includes receiving from an application an administrative integration message bearing the instructions to alter the adapter.