![]() However, only one device (the “master”) can send data. It’s possible to connect up to eight devices on one network. The songs you listen to, for example, are sent instantly from your Spotify app to your headphones. Sending data over BluetoothĪlthough a Bluetooth connection is relatively weak, it remains effective enough for data transfer. Once devices connect for the first time, the pairing is usually “remembered,” and future connections will happen automatically when both devices have Bluetooth activated and are near each other. You have to approve each new connection, which makes Bluetooth relatively secure. When you connect two Bluetooth-enabled devices for the first time, this is called pairing. Because the broadcast signals are very weak, they usually do not affect other devices operating at the same frequency. Pairing Bluetooth devicesīluetooth devices must be close to one another to be able to exchange information, usually within a distance of 10 meters (30 feet). Bluetooth operates at frequencies between 2.402 and 2.480 GHz. Bluetooth technology uses short-wavelength UHF radio waves to establish the connection, making it essentially a radio connection. It eliminates the need for a USB cable when you want to exchange data between two devices. ![]() How Does Bluetooth Work?īluetooth wirelessly connects different devices, such as your phone and your laptop. New devices must use versions 4.2 and up. ![]() The most current version of Bluetooth is 5.2, and from 2023, much older versions will be scraped. Otherwise, they go into sleep mode until a connection is initiated again thus saving energy. Such devices periodically exchange small amounts of data. For example, FitBit devices that run on a small battery over a long period. On the other hand, Bluetooth Low Energy (BLE) was invented as a variation of Bluetooth for low-energy devices. In the process, it consumes a lot of power. Think of your phone transmitting music to your wireless headphones or your gaming PC transmitting your actions to a wireless controller. This type is used to transmit high amounts of data over a long period. This is the most commonly used type of Bluetooth. To make it easier, Bluetooth can be categorized into two kinds. As a result, countless Bluetooth versions exist today. The first Bluetooth-enabled phone didn’t hit the market until 2001.īluetooth has had to evolve and catch up with modern technological advances. Meaning, the technology was rather simple and insecure. ![]() At that time, it was developed to transmit data between “stupid” devices that were close to each other. Types of Bluetoothīack in the early 90s, no one would have imagined that Bluetooth would be as prevalent as it is today. A majority of newly manufactured devices come with built-in Bluetooth functionality. Today, you can find almost everything with Bluetooth connectivity - from wireless headphones to speakers to the refrigerator in your kitchen. The technology was developed in the early nineties by Jaap Haartsen, who worked for Ericsson. This is one of the main reasons why Bluetooth is so popular and is built into more and more devices every day. In other words, with Bluetooth, you can share information between, for example, your phone and your headphones without needing a cable.īluetooth is an open standard, meaning anyone can freely use the technology without a license. What is Bluetooth?īluetooth technology is a protocol for establishing a local network to exchange data wirelessly between nearby devices. Now is the time to get up to speed about all things Bluetooth: what it is, how it works, common Bluetooth attacks, and tips for maximizing Bluetooth security. Bluetooth could expose a great deal of data from your mobile phone, laptop, or computer. It’s not only about people discovering which music you stream to your Bluetooth headphones, either. The question is: how secure is Bluetooth?Īs with any wireless system, your data could be seen by unintended recipients. From smartphones to keyboards to cars, people connect devices invisibly and automatically without thinking twice. Bluetooth is an integral part of the technology landscape today. ![]()
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