I've all but given up with keeping business cards. My preferred tool for capturing business cards and other bits of paper that float around at meetings and events has been Evernote. The Premium subscription that I pay for lets me scan stuff. The app then performs OCR so the contents can be easily searched. Business card scanning has a nifty feature where it can automatically connect you on LinkedIn and/or send your contact details (a digital business card) over email. Microsoft has now updated their camera app for iOS, Microsoft Pix, so it can recognise documents, whiteboards and business cards.With this latest update, Microsoft has added the ability to recognize and scan blackboards - for students at hipster schools I guess.