It's a prototype; it's not going to work, as it's entirely image based. In the case of web access, what really matters is the code behind the website. It's possible to make accessible any website, from complicated things like gmail and facebook to simpler things like reddit, if the programmer who developed the website gave the screen reader the information it needs to work. The most common way to do this is
$1. However, as a graphic designer, this is probably out of scope for you. It's something the developers/programmers you work with need to be familiar with.