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10 Curious Facts About Bluetooth Technology

Almost all devices currently available on the market support Bluetooth technology. But what is Bluetooth? Simply put, Bluetooth is a way for two nearby devices to transmit data to each other.

From Make Use Of has picked up curious information about Bluetooth technology. From this, we learn about the difference between Bluetooth and other common wireless technologies such as Wi-Fi or NFC, what are the pros and cons of technology, where the name comes from and so on.

What is Bluetooth?

Bluetooth is a wireless technology standard that aims to offer the ability to connect devices between them without a cable. The Bluetooth module is a small part of your device's chip, allowing it to communicate wirelessly with Bluetooth devices on other devices. In general, Bluetooth is used to transfer small amounts of data to avoid the use of too much battery power and to maintain a stable connection over short distances.

Who Invented Bluetooth Technology?

Bluetooth technology was developed by a team of engineers working for Ericsson. Ericsson's Dutch electrical engineer, Jaar Haartensen, is recognized as the inventor of Bluetooth. Haardsen said he developed the standard in 1994, but for a long time he did not know how to baptize it.

Why technology is called Bluetooth?

Although Ericsson invented the technology, they also needed other companies to accept Bluetooth and use it on their devices. The name comes from Intel, an Ericsson partner whose employee Jim Krädach offers.

The technology is named after one of the kings of Denmark and Norway, Harald Bludut. He is known for uniting the Danish tribes in a kingdom, similar to the unifying communication protocols of Bluetooth technology.

Who has the Bluetooth standard?

No one "does not have" Bluetooth, but their use and advancement are managed by someone else. To ensure that Bluetooth becomes a universal communication protocol, in 1998 a group of companies teamed up to form the Bluetooth Special Interest Group (SIG), a non-profit group.

Today, Bluetooth SIG is involved in the development of new Bluetooth standards, such as Bluetooth 5 and the technology and participation of licensing partners. Currently, Bluetooth SIG has more than 30,000 members.

How does Bluetooth work?

Bluetooth transmits data using low-power radio waves, especially in the 2.4 GHz spectrum. This short-range frequency is generally used by most devices that need a wireless connection, including Wi-Fi routers.

What distinguishes Bluetooth from other wireless standards is the use of a technique called "frequency hopping". It's sophisticated technology, but there's only one explanation. Bluetooth uses 79 radio frequency bands on the 2.4 GHz frequency above. When sending data, Bluetooth first divides this data into smaller packets. These packets are sent separately through these 79 bands, and Bluetooth can change the bands quickly so that no line is obstructed.

Thanks to this intelligent "jump" of data, Bluetooth can simultaneously connect up to eight devices and allow them to communicate with each other.

Does Bluetooth use data?

Not! Bluetooth does not use any data. When Bluetooth connects two devices, it forms something called the Personal Area Network (PAN). The PAN does not require a file transfer service from the Internet or mobile devices or anything else.

Bluetooth Specifications

You may have heard that Bluetooth is divided into Basic Rate / Enhanced Data Rate (BR / EDR) and Low Energy (LE). This is in the past and you should no longer be dealing with this division. Most devices on the market in the last five years have Bluetooth 4.0, 4.1 or 4.2 – all with low power priority.

This process of splitting the data into smaller packets and sending them separately is also the reason why Bluetooth is primarily used for small data transfers that do not have to happen quickly. If you need to transfer large amounts of data quickly, there are better Bluetooth wireless protocols. Specifically, Bluetooth 4.2 can send data up to 1Mbps, which will increase to 2Mbps with Bluetooth 5. The distance between devices is about 10-15m for Bluetooth 4.2, but will reach up to 40m with Bluetooth 5.

What is the difference between Bluetooth and Wi-Fi?

Technically, Wi-Fi and Bluetooth are wireless protocols, allowing two devices to communicate with each other without cables. But the benefits and applications of each of these technologies are different. Wi-Fi is a stronger and faster connection, so it consumes more battery life. Bluetooth focus is on battery performance.

Does my computer or my laptop support Bluetooth?

Bluetooth is a common and widely used technology that is supported by most smartphones, tablets, laptops, and other wireless devices. On desktop computers, however, technology is not common. If your computer does not support Bluetooth, you can use an integrated Bluetooth motherboard.

Is Bluetooth technology safe?

Over the years, security experts have discovered several Bluetooth vulnerabilities. The latest major vulnerability, called BlueBorne, was opened in 2017. The Bluetooth SIG ensures that they have been fixed in a timely manner. However, there are a few steps you can take to ensure extra security:

1. Change the four-digit PIN of your Bluetooth. Usually, this is a simple procedure that varies from device to device. The most common default PIN is 0000 and hackers know this, so change as fast as possible if you have not already.

2. Turn off Bluetooth when not in use. This is the best thing you can do to ensure the security of your data.

See what Bluetooth 5 is and how it works


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