"No cell phone No life" in Japan

In Japan, cell phone is now one of the most important tools that almost all people carry. At first, it was simply a tool to call and email, and gradually became popular as a useful tool that we can use to get in touch with each other easily. The supply of cell phones grew rapidly after it had other functions besides calling and emailing. Now, we can take beautiful pictures, listen to music we like and see the internet as if we were using high-end equipment. Also we can use it as a wallet, train and airplane ticket, or sometimes it can become our ID. This means that we can do everything, all our needs in our daily life, with the small single cell phone. It can be said to be kind of crazy. Because it also means that our life is completely controlled by it, in other words. It may be true that technical progress makes human beings decline.