Do you know what GPS is? It's like a treasure map that tells you where you are and where you need to go. A Geo URI is kinda like that, but it helps computers know where things are on a map.
It's like a secret code that starts with "geo:" and then has some numbers and dots after it. That code gives the coordinates of a specific place on Earth, like your house or your favorite playground.
If a website or app sees a Geo URI, it can use that information to show you a map of the place it represents. So instead of having to type in an address or search for a place by name, the computer knows exactly where it is on Earth and can take you right there on a map.
Geo URIs are really useful because they can help you find your way around without having to stop and ask for directions. Just share that secret code with a computer and it'll show you exactly where to go!