Keep Out Sneaky Devices: IR and Bluetooth
An often-overlooked security issue is control via Infrared and Bluetooth. Most devious uses of IR and Bluetooth are simple practical jokes, but if security is important in your environment it isn’t something you can overlook.
Disable Infrared
To disable the infrared receiver on your Macbook, MacBook Air, Macbook Pro, Mac mini, or iMac follow these steps:

- Open System Preferences in the Apple Menu
- Click the Security preference pane
- Click the General tab if it is not already selected
- Check the box labeled “Disable remote control infrared receiver”
Alternately, if you use a remote with your computer, you can click the Pair button to pair only a specific remote with your computer. Provided you keep that remote secure, you will be safe from IR chicanery.
Disable Bluetooth
To disable Bluetooth, follow these steps:

- Open System Preferences in the Apple Menu
- Click the Bluetooth preference pane
- Uncheck the On box
If you use Bluetooth devices, then you can increase your security by pairing your devices and unchecking the Discoverable box in the Bluetooth preference pane, but you will need to leave the On box checked.
