Silent Signal From Your TV Gathering Information Through Mobile Devices - NBC 7 San Diego

Silent Signal From Your TV Gathering Information Through Mobile Devices

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    NEWSLETTERS

    Silent Signal From Your TV Gathering Information Through Mobile Devices
    Getty Images/Peter Macdiarmid

    Some companies may be using your television and your mobile devices to learn a lot more about you.

    It's called tech syncing. An undetectable audio beacon is sent through some TV commercials and into your home. That beacon is then picked up by microphones in your smart phones, tablets, and laptops, allowing companies to know what commercials you saw, when you saw them, and where you saw them.

    The federal government recently warned a handful of companies about doing this. Experts say it's a matter of time before someone else tries.

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