From my understanding, correct me if I'm wrong, DAISY is a
format (like .ePUB or .MOBI).
Digital Accessible Information SYstem (DAISY) format is a means of creating digital talking books for people who wish to hear--and to navigate--written material presented in an audible format. DAISY helps those with "print disabilities," including blindness, impaired vision, and dyslexia, to read electronic texts that have been converted into its format.
And you need special "programs" to read them.
As for the protected part, no clue!
And no, Zack, the ADA does not recognize a twisted sense of humor as a disability.
Although, in your case....