Bluetooth
Blue-tooth it’s technology which is create communication between two Bluetooth enable device without wair. Bluetooth operators work with 2.4 Ghz. Spectrum to create a wireless link between 2 devices using 
The key with blue-tooth is that it’s supposed to automatically identify enabled devices within 30 feet. Unlike most networking standards that require some configuration, blue-tooth theoretically require none. Some authentication is required, so strangers won’t be able to use your device without permission.
Networking
