Bluetooth gorilla marketing has already been tried, the problem is that you are letting unknown people/software access your attention. Having software to map o

Bluetooth gorilla marketing has already been tried, the problem is that you are letting unknown people/software access your attention. Having software to map out your route through a supermarket seems stupid. The device would need to know exact items (certain items are in two places in a store) at which point why not have it message ahead to the store and them have everything bagged up ready for you? No need for giving my position away.