Fuel dispenser anti-skimming input device

A system for detecting fraud, said system comprising:

• a card reader input device comprising a first housing, wherein first processing circuitry, first wireless communications electronics, and at least one of a magnetic read head or a smart card contact block are disposed within the first housing;
• a sensor module removably coupled with an exterior surface of the card reader input device, the sensor module comprising a second housing, the second housing comprising a memory;
• at least one inductive sensor, a power source, second wireless communications electronics, and second processing circuitry disposed within the second housing;
• wherein the second processing circuitry is in electronic communication with the first processing circuitry via the first and second wireless communications electronics;
• and
• the memory in the second housing storing information representative of a threshold value of at least one of inductance or losses and computer executable instructions that, when executed by the second processing circuitry, cause the second processing circuitry to perform the steps of:
• actuating the at least one inductive sensor obtaining sensor data, the sensor data comprising at least one of inductance or losses;
• comparing the sensor data with the information representative of the threshold value stored in the memory;
• and
• transmitting, using the second wireless communications electronics, a wireless signal to the first wireless communications electronics of the card reader input device.