Checkboxes

Much like radios, checkboxes can be more complicated than they first appear

So what are the rules for checkboxes:

1. They must be announced as a group.
2. The group must be described by "question".
3. Each checkbox must describe a unique answer (values can be duplicated)
4. Each checkbox must announce it's position in the list (e.g 1 of 4)
5. Each checkbox must announce it's selected status

It seems that if checkboxes are off the bottom of the screen that Voiceover on iOS cant access them, as such a button is required off screen.