https://adtmag.com/articles/2018/10/26/nearby-connections-killed.aspx > The Nearby Notifications functionality introduced for Android phones some three years is going away as engineers noticed it was plagued by spam and irrelevant messages. > The service let developers tie an app or Web site to a Bluetooth low energy (BLE) beacon and create contextual notifications, even with no app installed. It helped users see free Wi-Fi hotspots and do things like provide guides while in a museum, and list bus schedules at bus stops.