A method for detecting the presence of a human comprising: providing a first transceiver disposed at a first position within a detection area; providing a second transceiver disposed at a second location within said detection area; a computer server communicably coupled to said first transceiver; said first transceiver receiving a first set of wireless signals from said second transceiver via said wireless communications network; said computer server receiving a first set of signal data from said first transceiver, said first set of signal data comprising data about the properties of said first set of wireless signals, said property data being generated as part of ordinary operation of said first transceiver on said communication network; said computer server creating a baseline signal profile for communications from said second transceiver to said first transceiver, said baseline signal profile being based at least in part on said wireless signal properties in said received first set of signal data, and representing characteristics of wireless transmissions from said second transceiver to said first transceiver when no human is present in said detection area; said first transceiver receiving a second set of wireless signals from said second transceiver via said wireless communications network; said computer server receiving a second set of signal data from said first transceiver, said second set of signal data comprising data about the properties of said second set of wireless signals, said property data being generated as part of ordinary operation of said first transceiver on said communication network; and said computer server determining whether a human is present within said detection area, said determination based at least in part on a comparison of said wireless signal properties in said received second set of wireless signal data to said baseline signal profile. providing a first transceiver disposed at a first position within a detection area; providing a second transceiver disposed at a second location within said detection area; a computer server communicably coupled to said first transceiver; said first transceiver receiving a first set of wireless signals from said second transceiver via said wireless communications network; said computer server receiving a first set of signal data from said first transceiver, said first set of signal data comprising data about the properties of said first set of wireless signals, said property data being generated as part of ordinary operation of said first transceiver on said communication network; said computer server creating a baseline signal profile for communications from said second transceiver to said first transceiver, said baseline signal profile being based at least in part on said wireless signal properties in said received first set of signal data, and representing characteristics of wireless transmissions from said second transceiver to said first transceiver when no human is present in said detection area; said first transceiver receiving a second set of wireless signals from said second transceiver via said wireless communications network; said computer server receiving a second set of signal data from said first transceiver, said second set of signal data comprising data about the properties of said second set of wireless signals, said property data being generated as part of ordinary operation of said first transceiver on said communication network; and said computer server determining whether a human is present within said detection area, said determination based at least in part on a comparison of said wireless signal properties in said received second set of wireless signal data to said baseline signal profile. <EOS>