Companies can track your phone’s movements to target ads

Enlarge (credit: Qilai Shen | Bloomberg | Getty Images)

Google and Apple have taken steps this year they say will help users shield themselves from hundreds of companies that compile profiles based on online behavior. Meanwhile, other companies are devising new ways to probe more deeply into other aspects of our lives.

In January, Google said it would phase out third-party cookies on its Chrome browser, making it harder for advertisers to track our browsing habits. Publishers and advertisers use cookies to compile our shopping, browsing, and search data into extensive user profiles. These profiles reflect our political interests, health, shopping behavior, race, gender, and more. Tellingly, Google will still collect data from its own search engine, plus sites like YouTube or Gmail.

Apple, meanwhile, says it will require apps in a forthcoming version of iOS to ask users before tracking them across services, though it delayed the effective date until next year after complaints from Facebook. A poll from June showed as many as 80 percent of respondents would not opt in to such tracking.

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