Imagine your phone has a tiny camera that can see how your eyes move. When you look at it, the phone knows! It uses light to track where your eyes are pointing, like a detective watching your movements. This helps your phone react when you're looking at something on the screen, like making your phone brighter or letting it know what you want to click.
Examples
- Your phone can tell if you're looking at it like it's watching you play a game.
- When you're trying to unlock your phone, it knows you're looking at it by using light and a camera.
- You’re reading a message on your phone, and it gets brighter because the phone knows you’re focusing on it.
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See also
- Why Do We Get 'The Runs' on Planes?
- How Does a Fridge Keep Food Cool?
- How Does a Smartphone Recognize Your Face?
- How Did the Internet Begin?
- Why Do We Use Passwords for Security?