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9. Accessibility

Accessibility enhancements open up the iPhone to users with disabilities. iPhone OS features enable users to magnify (or “zoom”) displays, invert colors, and more. As a developer, accessibility enhancement centers on VoiceOver, a way that visually impaired users can “listen” to their GUI. VoiceOver converts an application’s visual presentation into an audio description.

Don’t confuse VoiceOver with Voice Control or the Siri Assistant. The former is a method for presenting an audio description of a user interface and is highly gesture based. The latter refers to Apple’s proprietary voice-recognition technology for hands-free interaction.

This chapter briefly overviews VoiceOver accessibility. You read about adding accessibility ...

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