How To Know That Mouse Keys is Workingīy default, OS X will play a sound when enabling or disabling Mouse Keys and when a modifier key is pressed. Check the On radio button (circled above) to enable Mouse Keys. This will allow you to enable or disable Mouse Keys using the option key rather than via system preferences.įigure 1. If desired, check the box labeled Press the Option key five times to turn Mouse Keys on or off. (Alternatively, click on the System Preferences icon in the dock.)Ĭheck the radio button labeled On in the Mouse Keys section (Figure 1).

Turning On Mouse Keysīy default, Mouse Keys may be turned on in the Universal Access panel of System Preferences:Ĭhose Apple menu > System Preferences, and click Universal Access. This will benefit users who are unable to manipulate or have difficulty manipulating the mouse. Mac OS X Snow Leopard Mouse Keys enables the user to move the pointer by pressing keys on the numeric keypad rather than via the mouse.