I will start with this question, What is a Beacon? a Beacon is a Bluetooth Low Energy (BLE) device that transmit continuous data/signal over short distances. It uses low energy (from what you can tell from the name) but has similar range as the regular bluetooth. Beacons can be used for different purposes, mostly nowadays they use them in retail stores, hardware store, and museums. Think about it like a lighthouse, where it always broadcast its signal no matter what!