| 摘要 |
A BLUETOOTH device is provided wherein the output RF transmission power level during pairing is purposefully reduced from otherwise conventional or normal communication levels to a low power level, greatly reducing the range of possible interception. Security can be improved even more by further reducing the transmit power even below that defined for a class 2 radio to an extremely low power level. After the link keys have been passed and/or other pairing processes, the BLUETOOTH devices may safely return to normal power levels to continue communications. In an alternative embodiment, a BLUETOOTH device may be required to transmit data keys (e.g., a link key) and/or other pairing operations over a temporary wired connection (or temporary line-of-sight or near line-of-sight connection such as infrared) to another BLUETOOTH device. |
