From my head on receipt scanner
A business card scanner can work on Windows and Mac operating systems. Business card scanners have good compatibility with other computer applications like: email programs, sales databases and spread sheet programs, which is the main reason of its popularity. A business card scanner helps marketing people in so many ways for sale point of view. It is the job of sales persons to meet different people on daily basis. Marketing and sales people have to meet current and potential customers, participate in jobs fairs, business conventions etc, and there they meet hundreds of people, and exchange cards with them.