Radio, telephone and television are widely used in the world. When you turn on the radio, you can listen. But when you use telephone, not only can you listen to others but also you can chat with them, however, you can’t see the other one at all. Television is much better than both of them. People can watch TV and listen to it, but you can’t take part in what you see.
Today, some people are using a type of telephone called vision-phone. Two persons who are talking can see each other with it.
Vision-phones can be of great use when you have something to show the person whom you are calling. It may also have other uses in the future. Some day you may be able to call up a library and ask to read a book right over your vision-phone. You may be able to do the shopping through it, too. Perhaps in the near future, vision-phone will come into wider uses in our everyday life.