Go Back button gives the customer the freedom to easily return to a previous page or interaction state. This control is crucially important to how customers navigate through a user interface

Although it is one symbol of User Control and Freedom of Human Centred UI heuristics, in our study we found that this button is still missing from many supermarkets’ self checkout screens. Even when a Go back button is included, the placement is often inconsistent, with seemingly random choices made about its position on the screen. Some checkout screens place it bottom right, some bottom left, some in the…


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