iKnowU is a unique way of exchanging contact information with other iPhone users.  There are dozens of ways to exchange contact information but none are quick and convenient and can be done directly from your iPhone.

iKnowU provides an easy to use interface to exchange iPhone contacts using a unique multi-digit code generated via the iPhone or via a forthcoming web interface.  Simply select the contact, upload it to the server, and exchange the code generated with friends, colleagues, girls at nightclubs, etc.