“A Midwest antiabortion group used cellphone location data to target online content to visitors of certain Planned Parenthood clinics,” the Wall Street Journal reports.
“The campaign used a common digital-advertising technology called geofencing to extract the unique device identifiers of phones carried into Planned Parenthood and other abortion providers… It then used those device IDs to target those people on popular social-networking sites such as Facebook, Instagram and Snapchat with antiabortion messaging.”
“All three social networks said the ads violated their policies and said future such campaigns would be rejected.”
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