This is stated on the Google blog.
"We limit the audience of selective advertising to the following general categories: age, gender, and general location (zip code level)," the company said.
Advertisers will also be allowed to use contextual targeting – to show their ads to people who are interested in similar topics.
“Political advertisers, of course, can continue to focus on the context, for example, to show ads to people who read or watch resources, for example, about the economy,” Google explained.
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The introduction of restrictions will begin this week, in connection with the elections in the UK. Then it will spread to EU countries. And by the beginning of 2021 – all over the world.
"It will take some time to implement these changes, and we will begin to apply a new approach in the UK within a week (before the general election). In the EU by the end of the year and in the rest of the world, starting January 6, 2020," the official Google blog says .