Chatting by pointing
How could 10 people point things out on a picture at the same time?
Chances are you've helped someone with something over the phone.
"Okay, do you see a small button? No? What do you see? A big button? What does it say? Back? No, no that one. Did you click it? Go back to the back button," and so on.
Chatdots was an experiment to help people have multiple chats, all pointing at an area on a photo.
