Each week, Google analyzes data from millions of anonymized set-top boxes (STBs) to see which channels they were tuned to second by second. We're then able to use tuning metrics to provide our advertisers with next-day reports of how many televisions showed their ads nationwide and how the audience responded with their remotes. With the insights, we’re not only able to offer advertisers better measurement and more accountability for their Google TV Ads campaigns, but also create a better viewing experience for TV audiences by showing viewers what they want to see, said Google blog.

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