To Gates, the current cycle of technological ... When I was a kid, I was so excited by self-checkout: its speed, its ease, its ability to save me from a strained, polite conversation.

Some Walmart shoppers are grumbling about the retailer's self-checkout lanes. The benefit of self-checkout is in the eye of the consumer. For every shopper who is upset there's no self-checkout ...

If you walk up to a self-serve checkout and pay for your items, the gates, in theory, determine the next customer to walk out ...