Dividers!!!!

One of my biggest pet peeves as a cashier is when a customer does not use the dividers to separate their things from the stranger in front of them. UGHHHH I can't tell you how annoying it is! I am constantly accidentally ringing up  other peoples items, because the customers aren't paying attention. They look at me like "are you stupid?" and I look back like "do you think I can read your mind?" It is ridiculous and a simple task that's right in front of your face so please save me that time!