Bluetooth technology is a short-range, low-power, low-cost wireless communications technology. The key feature of this technology is that it replaces the cables which connect portable and fixed devices, and simultaneously maintains high levels of security. It gives a uniform robust structure for a wide range of electronic devices, ranging from laptops to mobile phones, to digital cameras audio equipments and printers, allowing them to connect and communicate with each other. This article examines the technological aspects of Bluetooth, its key features and application. It also highlights the security challenges while using the technology and examines its future potential.

Bluetooth—a low-power-consumption and short-range wireless technology ideal for Personal Area Networks (PANs). This technology has ability to handle both data and voice transmissions simultaneously and thus demonstrates unification of computers and telecommunication. It is the technology which has given hands-free headsets for voice call, data transfer from mobile sets to personal computers, printing and fax capabilities with laptop and many more. It gives us flexibility to place our electronic gadgets wherever we want and without huge clutter of cables and connections to be made.

Harald Blatand, also known as Harald Bluetooth, was the King of Denmark from the year 940 to 981. He was known for his ability to get people to talk to each other and during his reign Denmark and Norway were united. The developers of Bluetooth technology hoped that it would unite the world as Harald Bluetooth united Norway and Denmark, and thus decided to name this new technology after King Harald Bluetooth.

Bluetooth technology is globally accepted everywhere in the world. History of Bluetooth starts from 1994 when Ericsson Mobile Communications initiated a study to investigate the communication link between mobile phones and their accessories. They tried to find out feasibility of a low-power, low-cost radio interface solution. The study produced a Special Interest Group (SIG) in February 1998 comprising five companies—Ericsson, Nokia, IBM, Toshiba and Intel, which were market leaders in mobile telephony, laptop computing and digital signal processing technology.

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