In one implementation, a footfall detection assembly comprising a sensor underlayment unit and a data analysis device is provided. The sensor underlayment unit comprises a sensor having a unique sensor identifier and a plurality of zones, wherein the sensor is configured to measure at least one parameter in each of the plurality of zones, and a processing unit operably connected to the sensor. The processing unit is configured to receive the measured parameter values from the sensor upon the occurrence of a change in measured parameters and generate and transmit a data packet comprising at least the unique sensor identifier and measured parameters upon occurrence of a change in measured parameters of at least one of the plurality of zones of the sensor. The data analysis device is configured to receive the data packet, compare the measured parameter values of the data packet to previously-measured parameter values associated with the sensor underlayment into and generate a result therefrom.