Bluetooth is a wireless technology. It's similar to Wi-Fi, except it's used mostly for electronics and accessory devices on computers within close distance to the Bluetooth hardware. Bluetooth is also used on cellular phones for hand-less usability while driving.
Wireless
Bluetooth is mostly used in cell phones and data transmissions. For instance, Bluetooth is often installed in cell phones so Bluetooth headsets are used to communicate with the device remotely. Bluetooth operates on 2.4 GHz signals.
Distance
Bluetooth does not have the strong signal Wi-Fi has that allows users to connect several feet away from the device. But some higher-end devices can be used for up to 100 meters from the source. Bluetooth can also be used through walls, so the device can be hooked up in a home and used in other rooms.
Speed
Bluetooth is better used at close distances. The device transmits data at 480 Mbps up to 2 meters away from the source. At 10 meters, the speed drops to 110 Mbps.
Point-to-Point Data Transfer
Bluetooth allows people to have point-to-point data transfer without having direct line of sight. Bluetooth is omni-directional, so it does not require the receiver to be in the same room. There is also no configuration needed for both devices as long as Bluetooth is enabled.
Security
Bluetooth offers three levels of security. Owners can choose to have no security, but trust levels can also be set up for devices. For instance, if two Bluetooth devices have been connected, then they are trusted and can access resources.
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