Think about how many business cards you were handed that the last trade event you went to. Your industry is more than likely full of professionals carry several cards at all times. They like to have the cards out, since this is a very effective way to share info with one another. Developing a network of business contacts has long relied on the swapping of business cards at industry events.
Of course, holding onto all of those cars you received is a pain. It is more practical to scan them with a business card scanner. When a business card scanner captures the info on all of those cards you receive, it digitally stores the info on them and helps you create a contact list. Check out a business card scanner the next time you plan on attending a major event.