I've been told by others that the card.io SDK can scan expiration dates in addition to card numbers. Yet when I integrate it into my iOS 6 iPad project, I'm only able to scan the card number. Has anyone had success in other implementations? (i.e. iOS 5, iPhone, etc.)
Thanks in advance.
I work at card.io. Newer versions of the card.io SDK (3.x and above) do all the card scanning locally on the client - older versions sent images to our server for scanning. We haven't added expiry scanning to this new version yet, but it's still a better customer experience as it's faster (no waiting for network latency) and more accurate (no more failed reads).
来源：https://stackoverflow.com/questions/13076496/how-to-get-card-io-to-scan-expiration-dates-ios-6