self-checkout

Self-checkout machines in stores we supposed to reduce labor costs and save retailers money. Stores like Walmart are learning that in some cases the opposite is happening. What they're doing in Arizona.

Self-checkouts have been installed in nearly every grocery and retail store in Arizona. But are they safe to use? One attorney advises against using them, plus, what happened when an Arizona woman in her 60s tried to leave, not realizing some items had not scanned properly.