Single window systems have other benefits. One that collects data systematically enables consignmenls to be categorized more easily based on the associated risk by allowing creation of trader profiles limiting physical inspections to risky cargo and potentially making trade procedures more secure and efficient. By combining a portal where up-to-data information on tariffs and other legal and procedural requirements are available and by integrating a payment system, duties and other charges can be paid more quickly and accurately, raising government revenues.