Amanda Mull has a nice piece in The Atlantic about retail self-checkout. Self-checkout is horrible. For the most part, it doesn’t make things faster and in some cases (like you want to buy a beer), it makes things much slower. The only use case that it works well is if you are picking up a very few items that have big and obvious bar codes and don’t require a bag. Even then, there is a chance things will go awry.
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