Disclosed herein is a pet training system that includes a sensing device that is configured to signal a user when a pet is in the proximity of a selected location and a collar module that is configured to be fixed to a collar worn by the pet. A software application is configured to sense a disturbance or permutation in the environmental average magnetic vector, which disturbance is the result of the presence of a localized magnetic field generated by collar module. The pet training system further is configured to warn the user that the pet is within the sensed proximity of the selected location upon confirmation that a determined scaler magnetic state value exceeds a selected scalar threshold value.
