Bluetooth is a communication technology that enables devices to communicate with other devices. It's a part of wireless personal area network (WPAN) technology. In real life, we can see that some electronic devices can be controlled via Bluetooth network, for instance, listening to music using Bluetooth earphones, transferring a file, and gathering sensing data.

Currently, the Bluetooth specification is managed by Bluetooth Special Interest Group (SIG). They developed Bluetooth standards and specifications. Bluetooth 4.3 was released in December 2014. Since Bluetooth 4.x released, this standard is named as Bluetooth Low Energy (BLE). Sometimes, it's called Bluetooth smart technology.

OS X, Linux, and Windows 8.x / 10, natively support BLE and mobile OS, including iOS, Android, Windows phone, and BlackBerry. If your desktop OS doesn't support BLE, you can install a BLE driver based on the hardware stack.

Not all Bluetooth devices support BLE. You can verify this from...