Google's Nearby API has been available for years and had simplified a lot of close communication between devices, but you'll probably have forgotten about it unless you've ran across its notifications. In Lebanon, some malls and stores use beacons to broadcast notifications to passersby, and so far, the situation has been more or less tolerable. However, it seems some places were abusing the API to bombard users with spam, and so the Nearby Notifications feature is being shut down.

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