Cannot believe the screen throws a fit over a 4 cent mix-up and shuts the whole line down. That part blows my mind more than the lime thing. The machine says "unexpected item" like you snuck a whole watermelon in your bag, and it's really just a little green fruit. My store's self checkout does the same thing with a single avocado, freezes up and blinks red until someone types the code. Workers there don't even look anymore, they just tap the screen like they're playing a game they've already beat.

Asked a clerk at my local store about the same setup last month and she gave me a straight answer, which helped a lot. She told me the cameras only flag items that skip the scan and that nobody sits there watching live video, it just pulls up a clip if something gets marked. I watched the screen for a minute after that and it was actually kind of calming once I knew what it was doing. My advice is just walk up and ask, most of the workers seem happy to explain it because they deal with the same questions all day.