The subject matter described herein includes methods, systems, and computer readable media for tracking consumer interactions with products using modular sensor units. In one system, a plurality of weight and motion sensors is configured to track consumer interactions with products. The system further includes a plurality of sensor mounts for holding the sensors in place. Each sensor mount includes signal lines for transmitting power to the sensors and for conducting signals between the sensors and a signal processor. The system further includes a plurality of conductors for interconnecting sensor mounts to a signal processor. The system further includes a plurality of connectors to allow rapid addition and removal of the sensors and their mounts as needed for a particular product planogram.