Systems and methods for determining label positions

A label position monitoring system, the system comprising:

• a shelving unit disposed in a facility having a shelf with a front face;
• a plurality of electrically conductive wires extending along the front face of the shelf;
• a set of labels configured to be disposed along the front face of the shelf, each of the labels having a front surface that includes a machine-readable element and a back surface upon which one of a plurality of passive conductive patterns is disposed, each one of the plurality of passive conductive patterns on the back surface of each of the labels has an impedance and is configured to electrically couple to at least one of the plurality of conductive wires to generate different circuits with different effective impedances, where the different circuits and the effective impedances change based on a number of labels coupled to the plurality of conductive wires;
• a controller electrically coupled to the plurality of electrically conductive wires, the controller being configured to:
• transmit an electrical pulse through a generated one of the different circuits;
• and
• determine, based on a response of the electrical pulse to the change in effective impedances of the generated one of the different circuits, at least one of (i) an identity of each label mounted to the front face, (ii) at least one of the labels from the set has been mounted at an incorrect location on the front face of the shelf, or (iii) at least one of the labels is missing from the front face of the shelf.