Consider two designs of the same system, one that provides a single access method for each function and one that provides four different access methods: a pull-down menu, a context menu, a push button and a key shortcut.
The number of items that the users need to scan when operating a system based on the first design is only 25 percent of the number of items that they need to scan when operating a system based on the second design.
Updated on 25 May 2016.