BLE (Bluetooth Low Energy)
Bluetooth 5.x Low Energy BLE is best for IoT & Active RFID application, such as Real Time Location System & Indoor Positioning System, inventory, track & trace for people, animals & goods, etc… some application scenarios also include vehicle & people access control (also standalone), home & building Management, safety (hospital, construction site, etc.…), process automation, asset & facility management, smart city (parking, leisure & tourism, etc.…)