The name Bluetooth is taken from the 10th century Danish King Harald Blatand - or Harold Bluetooth in English. During the formative stage of the Trade Association a code name was needed to name the effort. Over an evening discussing European history and the future of wireless technology several felt it was appropriate to name the technology after King Blatand. He had been instrumental in uniting warring factions in parts of what is now Norway, Sweden and Denmark - just as the technology is designed to allow collaboration between differing industries such as the computing, mobile phone and automotive markets. The code name stuck.
In Jelling, Denmark a monument can be found in a church yard that celebrates both his achievements and those of his father the first king of Denmark "Gorm the Old". Interestingly this particular stone was lost for nearly six-hundred years after Harald had a small war with his own son, Sven Forkbeard, over control of the country. Sven "won" the argument (exiling his father in the process), and since this runic stone also glorified Harald, Sven had it buried. Only years later a farmer, curious about a large mound in his farm, rediscovered the stone.
The logo itself was originally designed by a Scandinavian firm at the time the trade association was announced to the public. Keeping to the traditions of the name, the logo combines the runic alphabetic characters "H" which looks similar to an asterisk and a "B". Look carefully you can seen both represented in the logo.
A Bluetooth is a wireless technology that allows computers, phones and other devices to talk to each other over short distances which is typically around 10 meters. Bluetooth is made to use radio waves in the 2.4 Gigahertz range and is designed to be a secure and inexpensive way of connecting between devices without wires.
Now a days you can find Bluetooth in cellular phones, handheld computers, laptops, printers, handheld organizers and more. It uses a common protocol, transmission of data and voice between two Bluetooth devices should be straightforward as long as the device has the software to cope with supporting the same service like sending data over a modem. Bluetooth is a lower speed and power than the 802.11b.
Wi-Fi Cell Phone