Here are some articles to get you started with iBeacon and Eddystone Beacons.
How Bluetooth beacons can be used to alert and audit social distancing
About the 4th Industrial Revolution
How to use beacons, iBeacons for RTLS and LBS
How to use sensor and proximity beacons for the Internet of Things (IoT)
Advice on what values to set for the beacon unique ids