| Comment | Correct, all modern wireless technology infrastructures today listen passively to the "pings" your phone gives out constantly.
Some retailers even drill down further and place them in a heat graph, so they can see what's popular (by ways of how long devices spend at X location or shelf) It's becoming a major way for retailers to see what's popular and what's not.
This is all 100% passive and it's correct, no identifying information is collected. it's just the "Big Data" world we live in now. |
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