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    Happy, angry, amazed – these are some of the emotions we like to express these days when we're sending a message on our smartphones! That's why many of us now add little pictures to our texts to brighten up someone's mobile screen but we're also using them as a quick way of telling someone how we're feeling. Yes, emojis have become a vital tool for communication.

    The emoji was first invented in Japan in the late 1990s and the word "emoji" comes from the Japanese words for "picture" and "character". The number of different images has dramatically increased since then and now we have a picture for every mood or situation.

    So now we have the option to give this new creation the visual "thumbs-up" but have you thought why we've become so addicted to using emojis? Professor Vyv Evans has written a book called The Emoji Code. He says, "Increasingly, what we're finding is that digital communication is taking over from certain aspects of face-to-face interaction. One of the reasons emojis are so interesting is that they really do enable us to express our emotional selves much more effectively." So emojis are a sort of replacement for the visual signals or non-verbal clues we normally give when we speak to someone face-to-face.

    Another advantage of emojis is that they are an international language – they don't use words but tell a message in the form of pictures so they can be easily understood whatever your native language is. However, the emojis you send need some thought as they can sometimes be misunderstood – if a friend sends you an emoji of a hammer, you may think he is angry when really he is saying he has hurt himself or he is clumsy!

    Emojis are a good way for showing common emotions. But as linguist Neil Cohn says, "To many, emojis are an exciting development of the way we communicate; To others, they are extinction of language." It does show there is a lot more to our communication than words alone but does this mean the decline in traditional writing?