They mostly use a screen reader, I think it's a proprietary one that is the current best. One also has a braille display that is insanely expensive (multiple thousands of dollars IIRC), but he almost never uses it.

They also use iPhones, as they complain that Android's accessibility is bad. I thought it was just the typical "I like what I'm used to", until I tried to use it on mine to help one of my coworkers with it, and he was right. It was unusable (taps wouldn't register, gestures wouldn't register, they were hard to do, etc). I was ready to throw my damn phone in the trash after ten minutes, I can't imagine having to use a phone like that all day.