Exchaning business cards are the most common way of mutual introduction despite obvious limitations.
Card manager makes social networking easy and handy. Key words describing a user's career, business and interests are stored in the device and discoverable by other users nearby. Locations of people interested in my key words as well as having corresponding ones that I am looking for are displayed on the screen. Intuitive sliding motions are used to give and receive cards, retaining the essence of the ritual. Collected personal contacts are kept up-to-date through network.