a139985e_Smart_Card_Events__Description
[Event ID] 612 [Error message] Reader insertion monitor error retry threshold reached: %1 [Description] 
This occurs when a smart card reader fails several times to respond properly to the IOCTL that indicates whether a smart card is present in the reader. The smart card reader is marked as defective and is not recognized by the service until it is removed from the computer and reinserted or until the computer is restarted. %1 = Windows error code
Smart Card Events