Quest and I are planning to develop a people counting method based on GSM signals. Ideally this device will be able to demodulate GSM packets and extract ISMI numbers to form a list of unique devices which will be used to estimate a population. We see this as having a variety of useful applications from analyzing traffic flow to creating a grassroots means of counting crowds and events. In addition this device could also be used to gauge demand for GSM services in underserved locations. At this point we’ve tried to go through the tutorial available on RTL-SDR.com to demodulate GSM packets on our computers however, there seems to be some installation issues that may require help in office hours. We’ve been trying to learn all we can about the available data without having access to it.