If you're like most business owners, you probably have a stack of business cards, ready to be handed out at your next networking event. If you've been networking for awhile, you probably also have a ring of business cards--maybe even a whole binder. If you're referring another business, you pull out your collection, flip through all of the other cards to find the one business you're trying to refer. There's nothing wrong with physical business cards... but what if there was a simpler way to pass along a business card?