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