Bluetooth technology allows you to connect together two devices, such as a mobile phone and a hands-free headset, without using wires. While primarily used with mobile phones, the technology also can be used to connect your computer to the Internet or transfer data between two different devices. While Bluetooth has a variety of different advantages, there are several disadvantages to the technology.
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Data Transfer Rate
Data sent between two Bluetooth devices has a maximum transfer speed of one megabyte per second. Infared is capable of transferring data at 4MB per second, and Wi-Fi is capable of speeds even higher. The slow transfer speed makes Bluetooth not an ideal choice for data transfer when faster connection methods are available.
Bluetooth only has a range of 15 to 30 feet depending on the device. The small range is a disadvantage for some who may want to use a Bluetooth device outside of that 30-foot radius. For instance, a Bluetooth printer in a home could not necessarily be used by every computer in the house if some of those computers are located out of the range of the printer. A Wi-Fi printer, however, could be used by anyone who could connect to the home's wireless network.
Since data is transferred over radio waves using Bluetooth, it is much easier for a hacker to break into than secure wireless networks. For that reason, Bluetooth should not be used to transfer data that needs to remain private and secure.
Bluetooth uses the battery power of a particular device in order to operate. Many cell phone makers send phones out with Bluetooth powered off in order to maximise the battery life of the phone. Turning Bluetooth on, while convenient, can drain a cell phone or computer battery, causing it to run out of juice long before it would have if Bluetooth was not powered on.
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