Some apps, like Dropbox and Steam, will ask to “control this computer using accessibility features.” But what the heck does that even mean?
The wording is confusing, to say that least. What does this permission actually grant? Basically, this gives the app in question the ability to control other programs. Apple outlines their advice here:
If you’re familiar with an app, you can authorize it by clicking Open System Preferences in the alert, then selecting the checkbox for the app in the Privacy pane. If you’re unfamiliar with an app or you don’t want to give it access to your Mac at that time, click Deny in the alert.
But that just leaves more questions. Why do you have to give this permission at all? What does giving this permission mean—will such applications really “control this computer”? And why is this called “Accessibility” access, instead of just system access? Let’s break this down.
Why Do I Have to Do This?
The process of enabling Accessibility Settings is a bit convoluted. You need to open System Preferences, then head to Security & Privacy > Privacy > Accessibility. From there you need to click the lock icon in the bottom-left corner, enter you password, and only then can you grant your application access.
So why do you have to do this? The answer, in short, is to protect your security.
By default, Mac apps are self-contained, and can’t change the way you interact with the system or other applications. This is a very good thing. It prevents sketchy things from happening, like games you’ve downloaded logging your keystrokes or malware clicking buttons in your browser.
But some applications need to control other applications to…
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