This video is a demonstration of the Large and Small Iris cards made by Cardnetics. They are functional iris mechanisms similar to those seen in photography apertures and sci-fi shows built into a card. The Small Iris is the size of a business card 2" x 3.5" and the Large Iris is the size of a typical greeting card 5" x 7" Video:Iris business card and greeting card aperture mechanism. Tags iris card large iris small iris fun business card, Wish you could channel surf through the best videos on reddit? The business card size doesn't have the picture slots so the picture The iris is going to make you and your potential customers cream their pants.