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ID CARDS representing these standard credit card formats are used to identify the new generation of DCN systems. It can be used as a prerequisite for the use of conference equipment and participation in conference activities, such as registration and voting. Technical specifications mechanical size (high x wide) 85 x 54 mm (3.3 x 2.1 inches) order information DCN ? IDCRD CARDS (each 100) ID card, a new generation of DCN system standard credit card format (100) for each order number DCN - IDCRD