GPS
Some days ago, I read some news about that somebody used GPS tracking devices to draw his own picture on the earth. It was a very funny topic.
GPS is very useful. When we go out, we always bring that. You know that GPS normally is used for tracking people, vehicles, goods, crowd control, children, and health care. I think it can be used for many purposes. I have some advices for GPS tracking devices.
Now people are bringing up rare and valuable animals and then send them back to the nature. After they were sent back, it is difficult to track their life. So we heard about that in China after people sent the pandas to the forest, some months later, some were found dead. If we can put GPS tracking devices with the panda, so we can track where it is going. When we want to help it, we can get there soon.
Another thing is about the relief helicopter in the earthquake. Normally when something bad happened, the environment and weather is much worse than the sunny days. It is always good to put GPS tracking devices on every helicopter. So when the helicopter is suffering bad weather, we can track that and go to help quickly.