Do you know what a computer is? It is a machine that helps you do different things like playing games, watching videos, or even talking to your friends who live far away. Sometimes, the computer has a bigger screen that you can touch to make it easier to use.
Now, imagine the screen is so big that it is as tall as two grown-ups standing on top of each other. That is a 10-foot user interface.
It is called that because the screen is about 10 feet away from you, and it is used to control what you see on a bigger surface like a wall or a projector.
This type of interface is often used in big events, like concerts or sports games, where people want to see what is happening from far away, and they use a big screen to help them.
So basically, a 10-foot user interface is a really big computer screen that you can use from far away to control what you see on a bigger surface like a wall.