I.R.I.S. Cardiris Pro 5 - Manual (Page 42)

Chapter 5 – Scanning business cards
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Besides the default settings Cardiris can also:

Detect cards in image.
Use this option when you are using a flatbed scanner. You can place
multiple business cards on your scanner's flatbed and Cardiris will
split up the image in different business cards, throwing away the
superfluous black or white borders.
When you are using a card scanner, use the default option Single
card.

Recognize cards after scanning.
When the option Recognize after Scanning has been selected,
Cardiris starts the recognition process immediately after scanning.
Make sure you select the correct country in the drop-down list before
scanning your cards.
This option is useful when you are scanning many business cards of
the same country. Note that you can only select a single card style at a
time.

Recognize back side after front side
When this option is enabled, you can also recognize the back side of
cards, after recognizing the front side.
This option is useful in combination with the option Recognize cards
after scanning when scanning double-sided cards. This way, you scan
and recognize the front side and are prompted to do the same for the
back side.