From Raj Kumar:
Contact Sharing is a utility application and facilitates in sharing contact information from your contact book with a friend, relative, colleagues or customer etc. The application user interface is very straight forward and in 2 steps you can share and update the contact book.To share a contact TAP "Share Contact" button it will show you a window to select a contact book tap Home/Work button and then tap Share button. After successful sharing it displays a key at the bottom along with the success message; Pass this key to your friend and he can get the shared contact by entering the key in the "Get Contact" window.The shared contact is cached for max 24 hour after that it gets cleared from the server cache automatically. In case your friend fails to get the shared contact within 24 hour then you have to share it again. It requires internet connection while sharing contact make sure you are connect internet.