Smart Data Models Program adaptation of the original IoTData data Models. This Resource describes the operation of a KeyCard style switch. It has one mandatory Property,’stateofcard’, which is a string enum type. It has two enum values: ‘validCardInserted’, ‘validCardNotInserted’. ‘validCardInserted’ means that a keycard was inserted and passed validation check. ‘validCardNotInserted’ means that a keycard is not inserted or it was inserted but failed to pass validation check.