A scanner apparatus is disclosed, which includes an operations panel, a scan execution unit, and a scan service providing unit. The scan service providing unit can request an authentication service providing unit to authenticate a user based on the verification information of the user included in a jobticket. The authentication service providing unit can provide service with respect to authentication. The JobTickets include verification information of users. The scanner apparatus further includes a JobTicket storage unit in which the JobTicket is stored. The scan execution unit executes the scan operation in accordance with scan conditions included in the JobTicket selected by the user via the operations panel.