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Bluetooth technology establishes standard means integrating well-tested technology with power-efficiency and low-cost of a compliant radio system. Establishing a standard also means that a group of industry leading promoter companies drives the specification forward. Bluetooth technology works because it has been developed as a cross industry solution that marries a vision of engineering innovation with an understanding of business and consumer expectation. Bluetooth technology is supported by product and application development in a wide range of market segments, including software developers, silicon vendors, peripheral and camera manufacturers, mobile computer manufacturers and handheld device developers, consumer electronics manufacturers, car manufacturers, and test and measurement equipments manufacturers. Bluetooth is a computing and telecommunications industry specification that describes how mobile phones, computer systems, and handheld devices can easily interconnect with each other and with home and business phones and computers using a short-range wireless connection. Using this technology, users of cellular phones, pagers, and personal digital assistants will be able to buy a three-in-one phone that can double as a portable phone at home or in office. This can quickly get synchronized with information in a desktop or a laptop computer, initiate the sending or receiving of a fax, initiate a printout, and, in general, enable all mobile and fixed computer devices to be totally coordinate. Bluetooth enabled keyboard can be used further away from the monitor that would reduce eyestrain for persons who are long-sighted. Increasing the distance would also reduce exposure to electromagnetic radiation from the monitor. Using Bluetooth user would be able to send video clips and still images between a mobile computer and camera and user can surf the Internet through a mobile phone or any Bluetooth enabled wire-bound connection. Bluetooth technology unplugs the digital devices and makes cable clutter a thing of the past. Bluetooth chip is designed to replace cables by taking the information normally carried by the cable and transmitting it at a special frequency to a receiver. A tiny Bluetooth microchip having a radio transceiver is embedded in the digital devices and this radio operates in a bandwidth 2.4 GHz that is globally available. This technology adjusts the radio power according to the need. When the receiving radio gives information that is few distances away, the transmitter modifies the radio signal to suit the exact range. It is designed in such a way that it functions very finely even in noisy radio environment. It has the potential to give a very high transmission rate. All data is protected by encryption, authentication routines, and error-correction methods. Bluetooth technology eliminates wires and cables between stationary and mobile devices and facilitates fast and smooth data and voice communication. It makes ad hoc networks possible and allows synchronicity between personal devices. Effectively, a Bluetooth enabled device can function without an expensive facia, display screens, buttons, and keys. This can lead to a large saving in the manufacturing cost, leading to smaller more discrete devices. Bluetooth technology is named after a Danish Viking and king HARALD BLATAND who lived in the latter part of the tenth century. He united and controlled Denmark and Norway. He loved blueberries so much that his teeth became stained with the colour, leaving him with a rather unique set of molars. Hence the inspiration of the name is from uniting devices. The idea of Bluetooth technology was born in 1994; Ericsson Mobile Communications was investigating the possibility of low power and low cost radio interface between mobile phones and their accessories. They wanted to eliminate cables between mobile phones and computer cards. In February 1998, five other companies joined and formed a ‘Special Interest Group’ (SIG). After that, many industries and companies joined SIG. Bluetooth technology is a joint achievement of nine leading companies 3COM, ERICSSON, IBM, INTEL, LUCENT, MICROSOFT, MOTOROLA, NOKIA, and TOSHIBA. After the original idea, the originators soon realised that a lot more was possible. If information can be transmitted between a computer and a printer, it can also transmit from a mobile phone to a printer, or even one printer to the other. The projected low cost of a Bluetooth chip and its low power consumption means it can literally be placed anywhere. Mobile phone manufacturer NOKIA has introduced a Bluetooth profile aimed at in-car mobile phone users. The ‘Set Interrupt Mask’ (SIM) access profile is designed to enable in-car communications without a dedicated SIM card. The profile allows a device to access a SIM card in a compatible mobile phone over a wireless link using Bluetooth technology, and uses that SIM card’s identification and communications functions. The device is then able to read and write data from and to the SIM card inserted in the other device as if the SIM was connected via cable. The most obvious application of this profile is in automotive communications, where a phone built into a car can access the functions of the driver’s mobile phone SIM card, anywhere within the car, to place and receive calls and access a contact database. The future of Bluetooth technology is bright, given that it meets the basic need of connectivity in close proximity and is the result of initiatives of leading communications and computer industry vendors. Bluetooth is among the key technologies that can make the mobile information society possible, blurring the boundaries between the home, the office, and the outside world. The seamless connectivity envisaged by Bluetooth enables exploration of a range of interactive and highly transparent personalized services that were difficult to imagine due to the complexity involved in making various devices talk to each other. Bluetooth technology adoption is expected to be widespread throughout the computer and telecommunications industry. Over the long term, manufacturers will also benefit from the ability to replace multiple connection ports with a single Bluetooth module, gaining economies at the production level.