kartikbb

Hey Jason, Thanks for the insight. I have few follow up questions: 1. Regarding tracking using GSM, you mentioned there are certain kits available. Could you point me to few? 2. Regarding tracking using Wifi - How can i make the mobile phone send packets to my tracking node? Do i have to setup a wifi hotspot of mine? And how will i know the signal strength?

Hey I am building a solution which would track how people move around in a supermarket by capturing their mobile signal that is continuously exchanged with cell phone towers. I am not interested in reading actual data being transferred. I should be able to detect presence of a GSM cell phone and uniquely identify one signal from the other. I want plot this signal on the map of the supermarket. So i should be able to know the distance and direction of the signal with respect to the detector. What do you suggest is the best way to do this?