Monitoring the presence of objects using electrical devices

A system for monitoring a presence of an object in a volume of space, comprising:

• a controller;
• a first electrical device coupled to the controller, wherein the first electrical device is disposed in the volume of space and comprises a first receiver, wherein the first receiver has a first communication range;
• a second electrical device coupled to the controller, wherein the second electrical device is disposed in the volume of space and comprises a second receiver, wherein the second receiver has a second communication range;
• and
• an object comprising a beacon having an object communication range, wherein the beacon is capable of communicating with the first receiver when the object communication range overlaps with the first communication range, wherein the beacon sends a plurality of signals that are received by the first receiver when the object communication range overlaps with the first communication range, wherein each signal of the plurality of signals comprises an identification of the object,
• wherein the controller tracks receipt of the plurality of signals received by the first receiver over time,
• wherein the controller determines a first point in time when none of the plurality of signals is received, wherein the controller determines at the first point in time that the object is removed from a first location within the volume of space, wherein the first location is defined by the first communication range,
• wherein the second receiver, at the first point in time, receives one of the plurality of signals from the beacon of the object when the object communication range overlaps with the second communication range,
• wherein the controller further determines at the first point in time that the object is disposed within a second location within the volume of space, and
• wherein the second communication range defines the second location within the volume of space.