I know I am late to the party, but I am just now getting into Remote Incident Manager (RIM) by @pneumasolutions. So far, I am only testing with myself, from one Mac to another, but I am finding it a very cool solution. With RIM, a blind person can assist another person, regardless of that person also being blind and needing a screen reader, or not. I plan to use it to log into my home computer from the road occasionally, but also have purchased the weekend add-on so I can help others if the need arises. I can see how RIM can be a great training tool also.