Bluetooth Low Energy (BLE) is a wireless technology intended to provide reduced power consumption and lower cost compared to classic Bluetooth. It is included in Bluetooth version 4.0 and later. BLE supports functions like geo-fencing for indoor navigation, peer-to-peer wireless personal area networks, and has lower power consumption, cost, and faster setup time than classic Bluetooth. BLE devices can be Bluetooth Smart Ready devices that support both classic and BLE, or Bluetooth Smart devices that are LE-only and require a Smart Ready device to function, like activity and sports trackers.