Bluetooth

What is Bluetooth?

Bluetooth is wireless communication standard which allows electronic devices to connect and interact with each other. It can be found in a number of gadget, from smartphones, to loudspeakers, to laptops and more.

  

It doesn't rely on Wi-Fi, or mobile data or a cell network : as long as devices are Bluetooth compatible, and in close proximity to each other, they can take part in the wireless, two-way communication.

Who Invented It?

                               

Bluetooth was invented by a team of engineers, who are working for Ericsson, the networking giant. Ericsson's Dutch electrical Jaap Haartsen Credited as the inventor of Bluetooth. Haarsten has said he developed the standard in 1994, but hadn't yet found a name for it.

Bluetooth Technology 

Bluetoot Developed in 1994. It intended a wireless replacement for cables. It uses the same 2.4 GHz frequency as some other wireless technologies in the home or office. Such as cordless phones and WiFi routers. It creates a 10-meter (33-foot) radius wireless network, called a personal area network (PAN) or piconet. This can network between two and eight devices. This short-range network allows you to send a page to your printer in another room. For example, without having to run an unsightly cable. 

Bluetooth uses less power and costs less to implement than Wi-Fi. Its lower power also makes it far less prone to suffering from or causing interface with other wirelessdevices in the same 2.4 HGz radio band.

Bluetooth range and transmission speeds are typically lower than Wi-Fi (the wireless local area network that you may have in your home). Bluetooth v3.0 +HS-Bluetooth high-speed technology-devices can deliever up to 24 Mbps of data, which is faster than the 802.11b WiFi however, Bluetooth speeds have increased.

The Bluetooth 4.0 specification officially adopted on july 6,2010. Bluetooth versions 4.0 features include low energy consumption, low cost, multi vendor interoperability, and enhanced range.

The hallmark feature enhancement to the Bluetooth 4.0 spec is its lower power requirements ; devices using Bluetooth v4.0 optimized for low battery operation and can run off of small coin-cell batteries, opening up new opportunities for wireless technology. Instead of fearing that leaving Bluetooth on will drain your cell phone's battery, for example, you can leave a Bluetooth v4.0 mobile connected all the time to your other Bluetooth accessories.

How does the Work?

Bluetooth works on radio waves, specify in the 2.4 GHz spectrum. This short-range frequency is commonly used by most appliances that need wireless connectivity, including Wi-Fi routers.

What makes it different-the use of technique called frequency hopping. It's bit technical, but there's a simple explanation. It uses 79 bands of ratio waves in the aforementioned 2.4 GHz frequency. When you send data, bluetooth first divides this data into smaller pockets. These packets are sent individually over those 79 bands, and it is smart enough to change bands rapidly so that no one line gets clogged.

That's the main platform of the technologies. with the smart "hoping" of data transfer, it can simultaneously connect up to eight devices and allow them to talk to each other. 

What can I use Bluetooth for?

1. For Listening Music

One of the most common uses for this is to connect your smartphone to wireless speakers or headphones The advantage of this for headphones is that you don't need to worry about cables or wires becoming tangled or pulled; one of the reasons why it is particularly useful for sports headphones.

You can also find thousands old small and powerful Bluetooth speakers to fit all needs and these can be put to great use at house parties when you may not want to leave your smartphone in one spot pumping out music along a cable.

2. For hands-free headset

Making use of hands-free headsets is another popular use for this. You can connect small, in-ear devices to your smartphones so you can quickly and easily make cells on the go.

Is It Safe?

No technology is fully safe, and the matter only gets more complicated when you're dealing with something like it. It places a premium on making it easy to pair two devices, and that's a double-edged sword as miscreants can exploit this ease to cause harm.

Over the years, security experts have discovered several risks in it. The latest big Vulnerability was found in 2017, called BlueBorne The Bluetooth SIG ensures these are patched in good time. But that Said, there are a few steps you can take for a little extra security :

1. Change your Bluetooth's four-digit PIN. It's usually a simple procedure depending on your device. The most common default PIN is 0000 and hackers Know this, so when you can change it.

2. Switch it off when you aren't using it. It's the safest change you can make, and using "hidden profiles" and other such tricks have proven not to increase security.

 Writer: Mr. Krishan Kumar Saini 

Today we have learnt Basics about Bluetooth. Hope this lesson is helpful for you.