. >> reporter: yoichi koizumi is a music promoter. he exchanges name cards with clients every day. >> translator: look, with this card i can do this. >> reporter: when he holds his business cards up to a tablet it activates what are called augmented reality images. a promotion video appears on the screen. >> translator: if your boys card has an impact you'll be immediately remembered. the page view for the promotion video rises sharply. this certainly helps my business a lot. >> reporter: to use it, all you have to do is download a special app and register the url address of whatever you wish to show. you can display anything from a restaurant menu to a company mascot. the service costs $20 a month. these high tech business cards are spreading into various fields. more and more people are using business cards as presentation tools. this singer is offering tapes to entrepreneurs. a lecturer advises them to include personal information on their cards, such as their passion for their jobs, or even their hobbies. he says this can serve as