The ExpiryMonth of this CreditCard object.
The month the credit card expires.
Month the credit card expires. The month is in a two-digit natural form(January=1, ..., December=12). Obtaining good results for the ExpiryMonth and ExpiryYear sometimes requires many frames. Scanning can continue (even after the ScanFrameStatus is NumbersFound), as long as ExpiryMonth and ExpiryYear are equal to 0.