Sony VAIO VGN-UX100 Series User Manual page 55

The Bluetooth functionality may not work depending on the third party devices or the software version used by third party
companies.
As general characteristics of Bluetooth technology, connecting multiple Bluetooth devices to your computer may cause
bandwidth congestion, resulting in poor performance of the devices.
Bluetooth Security
The Bluetooth wireless technology has an authentication function, which allows you to determine whom you choose to
communicate. With the authentication function, you can avoid any anonymous Bluetooth device to access your computer.
The first time two Bluetooth devices communicate, a common passkey (a password required for authentication) should be
determined for both devices to be registered. Once a device is registered, there is no need to re-enter the passkey.
The passkey can be different each time, but must be the same at both ends.
For certain devices, such as a mouse, no passkey can be entered.
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Using Your VAIO Computer