Beacons are small battery-powered devices that use Bluetooth low energy signals to connect with other smart devices. When a Bluetooth-enabled device such as a smartphone or tablet comes in the range of a beacon, the two devices can communicate.
With Google getting into the beacon game with Eddystone, customers do not even need downloaded apps! All they need is a Bluetooth enabled smartphone and Google Chrome installed on it. Once in the proximity of a beacon, these smartphones receive push notifications about deals, offers and more.