Try "Pairing" the remotes or if you only have the one remote (and using it only for the ATV), go to System Preferences on your Mac and select Security. At the bottom, you should see an option to disable the infrared sensor on your Mac, thus preventing any input from the remote.
Try "Pairing" the remotes or if you only have the one remote (and using it only for the ATV), go to System Preferences on your Mac and select Security. At the bottom, you should see an option to disable the infrared sensor on your Mac, thus preventing any input from the remote.