it's explained in other thread but I'll say it again. C.A.R.T. = Communication Access Realtime Translation. It's basically like a closed-captioning service. A stenographer connects his/her device to a laptop where you can view the captions. Pretty cool, huh?
This is the service my college contracted with when I was a student. I have used both on-site and remote CART service. Both helped me a great deal to participated fully in class especially in class/group discussions.