Ios 12.2 has a setting that allow websites to customize their behaviour for
assistive technologies, like VoiceOver. Enabling Accessibility Events may
reveal whether an assistive technology is active on your iPhone.
Although this could be a great advantage, I am concerned that it is on by
default. If you're not comfortable with letting websites know that you have
a disability, you should turn it off. It's in Settings > General >
Accessibility > Vision.
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