It's such a great feature and even has ACLs. I used to do training with this. Every student got a private username/password to connect to my laptop where their

It's such a great feature and even has ACLs. I used to do training with this. Every student got a private username/password to connect to my laptop where their login shell connected to a specific window (to which only that user had access) in a shared screen session. They each had their own little environment to hack in. Then when we were doing exercises and people got stuck, I would put their screen up on the projector so we could discuss their code together.