Bluetooth is a wireless technology that enables any electrical device to wirelessly communicate in the range of 2.5 GHz ISM frequency band.
Mobile phones, headsets, PDA’s and portable computers can communicate and send data to each other without wires or cables to link to devices together. The name of Bluetooth derived from the name of an English king Harold Bluetooth.
It a low cost, low power, radio technology, which is particularly suited to the short range Personal Area Network (PAN) application. Bluetooth Special Interest Group is authorized to develop its specifications & license.