A white cane is a long, stick-like tool that helps people who cannot see very well to move around more easily. Imagine you're playing a game of blindfold and you can't open your eyes. It's scary, isn't it? This is how some people feel all the time, and it's harder for them to know where to go, especially when there are obstacles in their path.
So, the white cane is made to help them. When they hold the white cane in front of them, they can feel things that their feet cannot, like what's on the ground, whether it's a step up or down, or if there is a road or a wall in front of them. The white cane is white with a red tip, making it easy to see for other people too, in case they need to help the person using it.
People that use the white cane have been trained to do so, and they know how to use it to keep them safe when they are walking outside. They move the white cane from side to side in front them to feel their way around and sense any potential obstacles in their path. They also use it to signal to cars and other people that they are visually impaired, and might need extra help to cross the road.
In short, the white cane is a helpful tool for people who can't see very well to confidently navigate the world around them safely.