System, method and device to interrogate for the presence of objects

A method for monitoring at least one object, the method comprising the steps of:

• providing an interrogator device that includes a sensing circuit to determine when a trigger event occurs;
• monitoring an electrical noise output or a power output of a power port of a vehicle by a pluggable device inserted into the power port and determining that the trigger event occurs when the noise output or the power output of the power port of the vehicle exceeds a threshold value ranging between approximately 12.0 V and 14.6 V;
• determining whether the at least one object is within a detectable range of the interrogator device when the trigger event occurs, based upon transmitting data stored in the interrogator device, the data corresponding to the at least on object;
• and generating a notification when the at least one object is outside the detectable range of the interrogator when the trigger event occurs;
• wherein the step of monitoring the electrical noise output or the power output of the vehicle comprises applying a filter that requires a minimum time period of the electrical noise or the power output falling below the threshold value to be considered a second trigger event.

A system that monitors at least one object, the system comprising:

• an interrogator device including a sensor having a detectable range within which the interrogator device interrogates for the presence of at least one object;
• and
• a communication module on the at least one object, in communication with the interrogator device, to monitor an electrical noise output or a power output of a power port of a vehicle by a pluggable device inserted into the power port of the vehicle and, wherein a triggering event occurs when the electrical noise output or the power output of the power port of the vehicle exceed a threshold value, the sensor sends a signal to determine whether the at least one object is within the detectable range of the interrogator device and generate a notification when the at least one object is outside the detectable range of the interrogator device;
• wherein the communication module comprises a filter that requires a minimum time period of the power output falling below the threshold value to be considered a second trigger event.