During a three-week period, twenty-three participants were continuously informed of the number of apps accessing their location information and the total number of accesses in a given period. They were flabbergasted by the sheer volume of the onslaught as they each variously learned that their locations were accessed 4,182 times, 5,398 times, 356 times, and so on, over a 14-day period—all for the sake of advertisers, insurers, retailers, marketing firms, mortgage companies, and anyone else who pays to play in these behavioral markets.28 As one participant summed it up, “It felt like I’m being
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