Unlike previous versions of OS X, which used a universal checkbox for all applications, the new functionality in 10.9 allows users to individually choose which apps can gain control of the system to perform their various scripted functions.Īpple has NOT provided any API to developers to programmatically enable accessibility for an app. With 10.9, Apple has moved the accessibility options to System Preferences ➞ Security & Privacy ➞ Privacy ➞ Accessibility. On 10.8 and lower I was using following Applescript to enable access for assistive devices: tell application 'System Events' I want to enable access for assistive devices programatically on 10.9.