In general, the text (and lightbox) should be larger so that people with
moderately low vision can read it without having to resort to using the speech
output.
In the toolbook-coded application on the actual kiosk screen, we aim for a
minimum application text height of 3/16" (4.8 mm) (FYI: see regulation 707.7.2
at http://www.ada.gov/regs2010/2010ADAStandards/2010ADAstandards.htm). We make
the help text much larger--about 7mm on the screen for people with low vision.
The actual displayed size is only useful if you know the display hardware, so
you should choose a font size that seems large on your own machine.
With such a large text size, the width of the lightbox will need to be
increased. Maybe 80% of the width of the screen? This will look a little odd if
there is only a single line of text that is displayed. If there is an easy way
to adjust the width depending on the content, that would be awesome, but do not
worry about it at this point if it isn't easy.
Original issue reported on code.google.com by jbjor...@gmail.com on 27 Aug 2013 at 7:11
Original issue reported on code.google.com by
jbjor...@gmail.com
on 27 Aug 2013 at 7:11