Bluetooth

What is Bluetooth?

• Created in 1994 by Ericsson, a Swedish company, Bluetooth was conceived as a wireless alternative to data cables by exchanging data using radio transmissions

• It was created as an open standard to allow connectivity and collaboration between disparate products and industries

What’s in a name?

The name Bluetooth came from a tenth century Danish King, Harald Blåtand or, in English, Harold Bluetooth. As the story goes, King Blåtand helped unite warring factions in parts of what are now Norway, Sweden and Denmark.

Details

• Uses short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485 GHz

• There are 3 classes:– Class 1: range of 100 m (328 ft)– Class 2: range of 10 m (32 ft), most common– Class 3: range of 1 m (3.2 ft)

Uses

• It is used to create personal area networks between two or more devices

• No need for line-of-sight– Replacement or IR

• Examples:

Mobile Phone Headset

Wireless Headphones

Wireless Keyboard, Mouse

Watches, Fitness Bands

Video Game Controllers

Car Audio (stereo, phone)

Car Tire Pressure

Toilet

Bluetooth-enabled INAX Satis toilet with built-in speakersAll you need to do is to get the MySatis app and you will be able to flush, raise and lower the seat or turn on the bidet wirelessly. Moreover, you also have the option to control the intensity of the flush or the bidet spray. If that wasn’t enough, it also records your daily bowel movements, thanks to the Toilet Diary app. If you are still not impressed, this toilet is equipped with built-in speakers that lets you stream music from your smartphone to enjoy your favorite tracks.

Security

• Devices are bonded using a process called pairing. Once two devices are bonded, they can communicate without repeating the pairing process. Bonds can be dissolved.

• Pairing usually involves putting one or both devices into discovery mode, and then performing some action to confirm the pairing.

• Some devices come pre-bonded (i.e. wireless mouse & dongle)