What is Bluetooth?
Bluetooth is a wireless technology for short-range (usually up to a maximum of 100 meters ) networking. Bluetooth device uses radio waves instead of wires or cables to connect to a phone or computer.This technology is much easier on your cell phone, digital cameras, printers, PCs and other gadgets allowing you to connect wireless together helps.
In today’s life, we are using many kind of wireless technology. Radio receivers and television sets are working by use wireless signal,which thrown into the air by a wireless signal.Using the same technology on your cell phone carries phone call to another phone.Even your WiFi technology also works on the same concept in computer data exchanging.
But these technologies are not use any copper cable for carrying data. They use radio waves to exchange data.
Bluetooth technology work on such a radio wave.But this technology is specifically designed to establish the relationship between the low distance ( about 10 meters or 10 feet).That electronic gadgets are works on this technology, each of them is fitted with a radio antenna. Which can transmit and receive both signal.Therefore, they constantly send and receive a wireless signal to the other of gadgets.
How does Bluetooth work?
Bluetooth technology provides data by using 79 different frequency (Channels) of radio wave band. And it works on 245 GHz.Radio, television, cell phones, and even some medical instruments works by using the same frequency.But not to worry, your phone’s Bluetooth connection will not twisted with the riot’s life support machine. Because, the transmitter or device which is fitted to your phone, it is much less powerful.As a result, there is no ability to carry the signals so far. The biggest plus point of this technology, is less distance to work.
This technology uses much less power, so the range is also much less.Theoretically, it is more secure than any other range of the wireless technology(such as WiFi). But, there are some aspect problem of this device.The Bluetooth devices can automatically detect each other and it can be connected directly to each other. That time the devices are connected together at the same time, they can communicate with each other.These devices are never tied to provide between connection. Because, each device communicate by using different frequency from 79 channels.
If you want to connect a devices with other devices, then they randomly pick a channel.If the channel is already used near somewhere, however, the device will automatically pick another channel and work on it.This technique is called a spread-spectrum frequency hopping.At the same time Bluetooth technology, the highest in eight devices can be connected simultaneously.
Is Bluetooth technology safe?
Wireless technology is always less secure than a cable connection.But a lot of hard work to penetrate the cable communication system security.But wireless technology is much easier to penetrate security. Because, all information constantly float in the open air of Wireless technology. If you have enough signal receiver device, you can easily receive the signal.
Bluetooth offers several security modes, and device manufacturers determine which mode to include in a Bluetooth-enabled gadget.You may come across certain limitations in Bluetooth devices. Just be faithful to your specific devices that are associated with each other.Bluetooth users can establish “trusted devices” that can exchange data without asking permission. When any other device tries to establish a connection to the user’s gadget, the user has to decide to allow it. Service-level security and device-level security work together to protect Bluetooth devices from unauthorized data transmission.
Criminals are always a little more sophisticated. There are some problems like “blue jacking,” “blue bugging” and “Car Whisperer” have turned up as Bluetooth-specific security issues.
- Blue jacking involves Bluetooth users sending a business card (just a text message, really) to other Bluetooth users within a 10-meter (32-foot) radius.
- Without your knowledge, through which the person will take control of your devices by using blue bugging.
- By blue snarfing,anyone can download any information from others Bluetooth device.
- The Car Whisperer is a piece of software that allows hackers to send audio to and receive audio from a Bluetooth-enabled car stereo.
Undoubtedly, there are many other hacking methods and many are coming, which is ready to destroy the Bluetooth network security.
Bluetooth is obviously a unique service.This is a wireless service which is widely used in worldwide.Everything considered Bluetooth is expected to become more pervasive as demand for wireless grows.
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