ISO standards for the user interface

In the field of international standards, two groups are working on USI standards, with substantial support from national bodies such as ANSI and DIN. There are four driving forces behind the work on user system interface standards: consistency between interfaces would make it much easier for users to move from one system to another, and would reduce training time; higher quality use interfaces would result from adherence to standards designed to maximise usability; comfort of the user would be assured by providing appropriate help and error messages, and enabling the user to tailor and control the interface; and procurement and product evaluation of high quality user interfaces would be simplified by testing conformance to appropriate standards. The ISO groups TC159/SC4 and JTC1/SC18/WG9 are developing standards for minimum levels of user performance and monitoring the use interface implications of other standards