Sony Bluetooth Utility - Manual (Page 348)

Encrypting the content of your transmissions
Since Bluetooth TM wireless technology is conducted wirelessly, there is always the possibility that a third party may be able to intercept your
transmissions.
You can use encryption to render the content indecipherable to anyone who manages to intercept it.
Important
 Encrypting your transmissions will still not guarantee complete security. Accordingly, please be aware that transmitting data is conducted
with an element of risk for the user.
Procedure
1. Right-click on the Bluetooth TM wireless technology icon in the task tray, and click on [Device Properties & Security].
The [Device Properties] window will appear.
2. Select [Link Level Enforced Security] in [Security Mode] under the [Security] tab, put a check next to [Encryption], and then click on
the [OK] button
Note
 Once you have configured the security mode, a window will appear when you first make a connection to another device, prompting you to
enter a Bluetooth passkey (PIN code).
Please click on the [OK] button after you have entered the passkey.
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