Read about scanner software
There is no telling when you will run into a future client based on a prior recommendation. This has probably resulted in a lot more business cards than you are able to handle. In order for you to make use of all these potential contacts effectively, you will have to key in all of that information into your computer. And for that a business card scanner is one of the most useful devices. Of course if you have been in business for a while, you probably already have a Rolodex that you put to regular use.