What is DAISY?

Digital　Accessible Information System is an international standard of Digital Talking books developed and maintained by DAISY Consortium since 1996.
Target : People with print disability including persons with visual impairment
Current SPEC:DAISY3 =ANSI/NISO Z39.86 in USA
Next SPEC:DAISY4 = ANSI/NISO Z39.98-2012
Supporting video, vertical writing, interactivity
More at http://www.daisy.org