What do you do with the business cards that you get from potential employees and potential customers in memory of the negotiations and joint drinking. If there is no sense from them, then the cards are immediately thrown into the trash, those that can really be useful, migrate to special folders with a bunch of pockets and wait there in the wings. It's not easy to carry such an album with you, but according to the law of life, it can come in handy at the most unexpected moment. Now iPhone will make your life easier, both literally and figuratively. Using the Card Holder program, the received business cards can be simply photographed using the built-in camera. Sort and link to phone numbers and addresses. This is practically a notebook with contacts. Information can be shared by sending a screenshot of the business card and information about it by e-mail. 
