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A 2021 report by Raydiant found that 67% of users have experienced at least one failure of a self checkout system. 25% said they would avoid self checkout because of prior bad experiences or slows. 65% worry about cleanliness. Many customers experience frustration at self-checkout when they need assistance. Accessibility
Middle gray. 50% CIELAB lightness. ( Y = 18.4%) In photography, painting, and other visual arts, middle gray or middle grey is a tone that is perceptually about halfway between black and white on a lightness scale; [1] in photography and printing, it is typically defined as 18% reflectance in visible light. [2] [3]