Methods and systems for calibrating a nuclear medicine imaging system are provided. Certain embodiments provide a method including sending, by a computing device, a first data message; sending a first stop message; clearing a message stream state; and sending a second data message. On the basis of supplementary data from the sensor signals, the safety switch infers how the sensor signals are to be processed. The portal software and distributed components of the system, track an individual’s gaming transactions and provide alerts to the individual of reaching or exceeding loss limits, time limits, changes in gambling behavior, and other related services.