Most people have never heard of Communication Access Realtime Translation (CART), but it is a great way to make a live event more accessible. CART isn't as good for the deaf as ASL, but it is generally seen as sufficient accommodations. The Canadian Hearing Society has some very legitimate concerns about how CART is implemented and provides suggestions about how this should be regulated better.
I've now seen CART used at Carleton's Accessibility Summit, Accessibility Camp TO and...