| Bluetooth technology specifies a two-way, | | | | telecommunications, computing, and chip |
| short-range radio link that enables | | | | manufacturing industries. To date over 2000 |
| communication between PCs, mobile phones, | | | | companies are members. The Bluetooth SIG |
| PDAs, and other computing, electronic, and | | | | oversees a qualification program to ensure |
| home theatre equipment. With Bluetooth, you | | | | compliance with the standard and |
| can easily synchronize contact or calendar | | | | interoperability with other Bluetooth |
| data between a PDA and laptop, talk on a | | | | devices. Any device bearing the Bluetooth |
| hands-free phone, or print without cables. It | | | | logo has successfully completed |
| is a cable replacement technology like | | | | interoperability testing.Technical |
| infrared, but offers many advantages over | | | | DetailsSpeed: The gross data rate supported |
| infrared.The Bluetooth specification focuses | | | | by Bluetooth is 1 Mbps. Actual data rates are |
| on keeping costs low, power consumption | | | | 432 kbps for full-duplex and 721 kbps for |
| minimal, and the size small. Its low power | | | | asymmetric transmission.Frequency: Bluetooth |
| consumption means it can be used in | | | | uses the unlicensed ISM (Industrial, |
| battery-powered devices. Bluetooth offers | | | | Scientific, and Medical) band at 2.4 GHz. In |
| faster data rates and greater transmission | | | | most countries, this band is available. In a |
| distances compared with infrared and there | | | | few countries it is reserved for military |
| are no line-of-site restrictions. It operates | | | | use, but even these countries are moving to |
| at the 2.4 GHz radio frequency, ensuring | | | | make the band available for general use. |
| worldwide operability.HistoryBluetooth is | | | | Because Bluetooth shares the same frequency |
| named after a 10th century Danish king, | | | | range as 802.11b WLAN products, these two |
| Harald Blatand (Harld Bluetooth) who was | | | | technologies cannot operate in the same space |
| known for uniting warring groups in | | | | under some conditions.Security: Bluetooth is |
| current-day Norway, Sweden, and Denmark. It | | | | designed to be as secure as wire using |
| was originally developed by Ericsson, but is | | | | authentication and 128-bit encryption. |
| now managed by the Bluetooth Special Interest | | | | Applications can also build their own |
| Group (SIG).The Bluetooth SIG is an industry | | | | security on top of the Bluetooth connection. |
| group with members from the | | | | |