The design for this self checkout interface at Walmart is designed in a way that could make it easy to make a huge mistake. If you notice, the place where you get your cash back is all the way at the bottom, completely out of sight. Although there is a large sign that says cash out, it is not in plain for for someone over 3 feet tall to easily see. The sign would actually be covered by your own body since that is where most people stand in order to scan their items. I noticed most self check out interfaces are designed like this and I often wonder how many people accidently forget to take their cash after they pay. I can only imagine how angry I would be if this happened to me. To make this interface design more successful the designer should put the cash out section in a higher area, possibly directly next to where you put your cash in.
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