TECHNOLOGY
Friends, what could be more troublesome than wire? Our computers, TVs, DVD players, home telephone lines, etc. are tangled with a bunch of wires. And these wires are just as awkward to look at — and just as troublesome. But with the advent of Bluetooth technology, it has been possible to get a lot of relief from this cable problem.
This technology makes it easy to connect your cellphones, digital cameras, printers, PCs and other gadgets together wirelessly. So let's find out now how this technology works and how advanced it is compared to WiFi.
Carries calls from one phone to another using your cellphone and the same technology. Even your WiFi technology works on the same idea that computers exchange data. All of these technologies do not carry data on a copper cable, they all use radio waves to exchange information.
Bluetooth is a technology that works on such radio waves, but this technology is specifically designed to communicate over short distances (10 meters or 10 feet). Typically, this technology allows you to download photos from a digital camera to your PC, to connect a wireless mouse or keyboard to your laptop,Or use a hands-free headset with your phone to talk and drive safely. Electronic gadgets that run with this technology have a radio antenna attached to each of them, which can both transmit and receive signals, so they are constantly sending and receiving wireless signals along with other gadgets. Older devices don't already have Bluetooth,This requires the installation of adapters for this technology to work (such as installing a USB adapter stick on an old laptop or desktop). 3 classes of Bluetooth are available depending on the power of the device.
Class 1 is the strongest class, which can transmit signals up to 100 meters. Class 2 is the one we use the most, it can work up to a distance of 10 meters and Class 3 is a much less powerful class that works up to just 1 meter.
Read Also: What happens if the laptop is left unused for a long time?
This technology uses much less power, so its range is much shorter — and theoretically it is safer than other high-range wireless technologies (such as WiFi). But even then there are actually some disadvantages. Bluetooth devices can automatically detect each other and connect directly to each other.
If you want to connect one device to another, they randomly pick a channel.If that channel has already been used somewhere nearby, your devices will automatically pick up another channel and work on it (this technique is called spread-spectrum frequency hopping). To avoid the risk of interference with any electrical equipment, two connected devices always work by changing their frequency (changing the channel about 1000 times per second).
When a device is connected to another device and data is exchanged, another device can be connected at the same time and keep in touch with them. Bluetooth technology allows up to eight devices to be connected simultaneously at the same time.
But now the question is, how secure is Bluetooth? Encryption is used to keep WiFi technology secure, and it has many more security features (how to keep WiFi secure?). In Bluetooth, you can add restrictions to certain devices, only the trusted devices you specify will interact with each other.For example, if you specify your phone to be a hands-free headset, no other device will be able to connect to it. This technique is called device-level security. Again, if you want, you can specify what your Bluetooth devices can and cannot do, this is called service-level security.
Friends, you know that criminals are always a little more realistic. You've probably heard of bluebugging, by which bad guys unknowingly take control of your device. There is also bluejacking - which allows anyone to send a message to anyone's device,Mostly used in marketing. And there is Blu-Snarfing, which allows you to download any information from anyone's device using Bluetooth. Undoubtedly there are many more hacking methods coming and going, which are ready to destroy the security of the Bluetooth network.
WiFi, on the other hand, is designed to exchange a wide range and a large amount of data. WiFi is essentially the exchange of data between computers and the Internet — and this technology can work over a wide range. The use of this technology requires a lot more power and extended security.
In fact, Bluetooth and WiFi are complementary technologies, they are not competing with each other — and you can use these two technologies together to make your job easier.
Thanks for reading today's post carefully. Hope you know a lot of important information about this technology. In addition to reading this post, don't forget to read the post about "5 Misconceptions about Bluetooth". Be sure to let me know in the comments and share the post with any questions.
Hello I'm Sakibur Rahman.A passionate blogger from Bangladesh. I love hacking and new technologies :-). Currently I'm 17 Years old and Studying at 11th Grade.
What is Bluetooth? | How does it work? | How secure is Bluetooth?
Friends, what could be more troublesome than wire? Our computers, TVs, DVD players, home telephone lines, etc. are tangled with a bunch of wires. And these wires are just as awkward to look at — and just as troublesome. But with the advent of Bluetooth technology, it has been possible to get a lot of relief from this cable problem.
This technology makes it easy to connect your cellphones, digital cameras, printers, PCs and other gadgets together wirelessly. So let's find out now how this technology works and how advanced it is compared to WiFi.
What is Bluetooth?
Friends, these days we all use wireless technology. Radio receivers and television sets work by receiving wireless signals thrown into the air.Carries calls from one phone to another using your cellphone and the same technology. Even your WiFi technology works on the same idea that computers exchange data. All of these technologies do not carry data on a copper cable, they all use radio waves to exchange information.
Bluetooth is a technology that works on such radio waves, but this technology is specifically designed to communicate over short distances (10 meters or 10 feet). Typically, this technology allows you to download photos from a digital camera to your PC, to connect a wireless mouse or keyboard to your laptop,Or use a hands-free headset with your phone to talk and drive safely. Electronic gadgets that run with this technology have a radio antenna attached to each of them, which can both transmit and receive signals, so they are constantly sending and receiving wireless signals along with other gadgets. Older devices don't already have Bluetooth,This requires the installation of adapters for this technology to work (such as installing a USB adapter stick on an old laptop or desktop). 3 classes of Bluetooth are available depending on the power of the device.
Class 1 is the strongest class, which can transmit signals up to 100 meters. Class 2 is the one we use the most, it can work up to a distance of 10 meters and Class 3 is a much less powerful class that works up to just 1 meter.
How does Bluetooth work?
Bluetooth technology transmits data using 89 different frequencies (channels) in the radio wave band — and operates at 2.45 GHz. Radios, televisions, cellphones, and even some medical devices operate using this same frequency.But there is no reason to worry, your phone's Bluetooth will not mess with someone's life support machine. Because the transmitter on your phone or device is much less powerful, so it does not have the ability to carry the signal so far. This is the biggest plus point of this technology working at short distances.Devices that are connected together can communicate with each other at the same time. These devices never connect to each other — because they each pair with each other using different frequencies from 69 channels.Read Also: What happens if the laptop is left unused for a long time?
This technology uses much less power, so its range is much shorter — and theoretically it is safer than other high-range wireless technologies (such as WiFi). But even then there are actually some disadvantages. Bluetooth devices can automatically detect each other and connect directly to each other.
If you want to connect one device to another, they randomly pick a channel.If that channel has already been used somewhere nearby, your devices will automatically pick up another channel and work on it (this technique is called spread-spectrum frequency hopping). To avoid the risk of interference with any electrical equipment, two connected devices always work by changing their frequency (changing the channel about 1000 times per second).
When a device is connected to another device and data is exchanged, another device can be connected at the same time and keep in touch with them. Bluetooth technology allows up to eight devices to be connected simultaneously at the same time.
How secure is Bluetooth?
Wireless technology is always less secure than cable communication. Remember the old movies, where a secret agent was attached to a telephone cable to monitor someone's telephone conversations. The security of the cable communication system is breached but it is a very difficult task.But in wireless technology, security breaches are much easier সকল because all the information is constantly floating in the open air. If you have enough signal receiving device you will get the signal easily. However, if encryption is now used in wireless technology to fix this problem.But now the question is, how secure is Bluetooth? Encryption is used to keep WiFi technology secure, and it has many more security features (how to keep WiFi secure?). In Bluetooth, you can add restrictions to certain devices, only the trusted devices you specify will interact with each other.For example, if you specify your phone to be a hands-free headset, no other device will be able to connect to it. This technique is called device-level security. Again, if you want, you can specify what your Bluetooth devices can and cannot do, this is called service-level security.
Friends, you know that criminals are always a little more realistic. You've probably heard of bluebugging, by which bad guys unknowingly take control of your device. There is also bluejacking - which allows anyone to send a message to anyone's device,Mostly used in marketing. And there is Blu-Snarfing, which allows you to download any information from anyone's device using Bluetooth. Undoubtedly there are many more hacking methods coming and going, which are ready to destroy the security of the Bluetooth network.
Bluetooth technology better or worse than WiFi?
I know almost all of you are confused about Bluetooth and WiFi - because on the one hand these two technologies work the same. But in fact they are prepared for many different and different tasks. Bluetooth is commonly used to link computers together and to link various electronic devices over short distances.Most of the time this technology is used for informal communication and exchange of small amount of data. This technology is relatively much more secure and uses much less data. One device can automatically connect to another device using Bluetooth technology.WiFi, on the other hand, is designed to exchange a wide range and a large amount of data. WiFi is essentially the exchange of data between computers and the Internet — and this technology can work over a wide range. The use of this technology requires a lot more power and extended security.
In fact, Bluetooth and WiFi are complementary technologies, they are not competing with each other — and you can use these two technologies together to make your job easier.
Last word
TECHNOSAKIB Now on YouTube, subscribe to theTECHNOSAKIB YouTube channel to get regular tech / science / lifestyle videos! Just, youtube.com/technosakib - go to this link and hit the subscribe button!Thanks for reading today's post carefully. Hope you know a lot of important information about this technology. In addition to reading this post, don't forget to read the post about "5 Misconceptions about Bluetooth". Be sure to let me know in the comments and share the post with any questions.
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Hello I'm Sakibur Rahman.A passionate blogger from Bangladesh. I love hacking and new technologies :-). Currently I'm 17 Years old and Studying at 11th Grade.
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