My trackpad recently ran out of batteries and rather than replacing them I decided to see if I could get by without it. It is an interesting experiment.
One issue I ran into is that on your login page the buttons for logging in with Google and Facebook do not have a tabindex associated with them and use html span tags so there is no way to click the "Log in using Google" button on this page using only your keyboard.
I was able to get around with it by viewing the source of the page then pasting this into the javascript console
$('span', $('.google-login')).click()
There is no way someone who is not a developer would know to do that though.
I think it probably makes more sense to make these html <button>
or <a>
tags and then the browser should take this into account automatically.
That should improve this page's accessibility.