Business card is one convenient tool to display your identity. Light and small to carry and inexpensive to produce in quantity, it makes a perfect, concrete summary about your expertise and experience. It provides a good starting point to greet others and introduce yourself in many occasions and to many at a time. Be it a card by itself or a part of a complete identity project,the card acts an epitome of your business and you yourself. It speaks for you when you are not there. If it functions well, it could add creditability and win confidence before the users talk to you in person. It helps you to connect people, extend your network and spread your name in a quick and easy way, just like why reporters need to exchange cards and plumbers leave their cards behind in the neighbourhood's mailboxes from time to time.