A radio technology making transmission of signals over short distances between telephones, computers and other devices possible without the use of wires. It is possible to link household appliances to a controlling device, like your 3g cellphone.

provides entirely wireless connections for all kinds of communication devices.

A radio technology that provides transmission linkage of signals over short distances between mobile computers, mobile phones and other portable handheld devices, and connectivity to the Internet. It enables users to connect a wide range of computing and telecommunications devices easily and simply without the need to buy, carry, or connect cables.

Allows connection between Bluetooth devices over a limited area (10metres).

Bluetooth is a low-power radio technology developed to replace the cables and wires currently used to link or connect electronic devices such as personal computers, printers and a wide variety of handheld devices, including mobile phones. Because it uses radio wave connectivity, a Bluetooth-enabled device has a constant, established connection to whatever browser it uses. This saves the user the trouble of logging on to check for e-mails or news updates, for example.