I came across this video from 2020 that demonstrates a couple of ways it works on iOS:

https://twitter.com/Kristy_Viers/status/1287189581926981634

You can turn on the various accessibility features and try them yourselves. While I was already aware of the 'voiceover' features, I was blown away by the braille keyboard and how quickly she could type with it.

Blind people use TTS set at ridiculous speeds that make my 1.5x podcast playback seem glacial. Even back in the late 80s I remember a blind classmate who had a portable electronic typewriter thing that read her entries back to her at rapid speed.

I commonly watch dev talks and walkthroughs on youtube at greater than 2x speed because the talkers make an effort to talk slowly for non native English speakers.

Just pop open the console with F12, enter the following and hit enter:

$('video').playbackRate = 2.5

Change `2.5` to whatever number you wish.

Press up in the console to bring back your last command faster with the cursor at the end so you just delete the number, type a new number and hit enter.

Alternatively, <https://addons.mozilla.org/firefox/addon/enhancer-for-youtub...> offers a much more convenient UI for playback speed.

I made a website that uses bookmarklets just for that.

https://www.videospeedup.com/

In the context of blind users: I wonder if it's common to have the display turned off, while still receiving touch input, I wonder how much it would improve the battery life.

smartphones come packaged with a screen reader. The screen reader announces what is present on the screen