“Stores today are catering to shoppers who perceive self-checkout to be faster than traditional cashiers, even though there’s little evidence to support that. But, because customers are doing the work, rather than waiting in line, the experience can feel like it’s moving more quickly. Store owners have also seen competitors installing self-checkout and determined they don’t want to miss out.” Nobody likes self-checkout. Here’s why it’s everywhere. Soon we’ll just walk out of supermarkets and get charged for what we take. It’s a reality being pushed by Amazon but that was predicted by my friend Jeff O’Keefe in an ad he wrote more than two decades ago called IBM Supermarket. (It’s also his birthday this week, in case his co-workers need a heads-up.)