Planet Technology BT-510U - Manual (Page 130)

Note
Other devices are still able to establish connections with your device even
if you have enabled the Non-discoverable mode.
Please enable "Non-connectable mode" if you wish to reject connections
from other devices.
5.2 Encrypting the content of your transmissions
Since Bluetooth communication 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.
1. Right-click on the Bluetooth icon in the task tray, and then click on
[Device Properties and Security…].
The [Device Properties and Security] window will appear.
2. Select [Link Level Enforced Security] in [Security Mode] under the
[Mode] tab, put a check next to [Encryption], and then click on the [OK]
button.
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