A computing multi-magnet device and method for solving complex computational problems is provided. The system includes a camera mounted to the vehicle and positioned to capture an image rearwardly of the vehicle. Additional components help prevent drug theft or abuse, measure actuator pressure, displacement and temperature in real time providing active feedback to the controller that is controlling the actuator. The LPS then uses the database to determine if the exitingexited tag is authorized to leave the facility. A preferred message service is selected from the at least one usable message service. The SIRs are multiplied by corresponding weighting coefficients and are added in an SIR addition circuit 7.