Thanks Rakesh for your comments. You are right that people donot keep the Bluetooth on. But you can build strategies to make them to turn on the bluetooth. If you talk to vendors like Nokia who control major share in the market they would admit more than 60% of the phones being shipped are bluetooth enabled. WIth the dropping prices of the same there is increasing number of terminals. It is very much feasible (infact available) to build solutions and technologies for customer profiling . Sorry for being vague in my responses but I donot want to use this media for marketing what we do. Do get in touch with me and we can have a detailed discussion. regards Suresh