@nony - Yes, Bluetooth is used in a lot of technologies these days. For example, I have a wireless keyboard. It works from up to 30 feet away from my computer (as if I could read from that distance) and it uses Bluetooth technology to communicate with the computer.
I plug a Bluetooth device into the USB port of the computer and the keyboard communicates with that device. It’s easy. At first I was concerned about going wireless with the keyboard because of the possibility of interference from things like cordless phones or what have you. However, I haven’t had a single problem or glitch. I should have done this a long time ago.