Mac OS X 10.6: Pairing and unpairing an Apple Remote
If you have more than one computer with a built-in infrared (IR) receiver in the same room, you’ll probably want to “pair” each computer with a specific Apple Remote. Pairing sets the computer to take commands only from the specified remote. You can pair your computer with only one remote at a time. You must remove the pairing before you can use a different remote with the computer.
You must be logged in to an administrator account to pair your computer.
To pair an Apple Remote with your computer:
Hold the remote close to the computer (3 to 4 inches away) and point the remote at the front of the computer.
Press and hold both the Menu and Next buttons on the remote until the paired-remote icon appears on your screen (about 5 seconds).
To unpair an Apple Remote:
Choose Apple menu > System Preferences, click Security, and then click General.
If your computer is not paired with a remote, the computer will take commands from any remote within range (up to 30 feet).
To prevent your computer from being controlled by any remote, select “Disable remote control infrared receiver” in the Security preferences pane.