I watched someone try taking a freaking step ladder through the self check out and the machine scanned it okay but then wouldn't proceed to the next item or cash out because "item must be placed on scale". Really?
It really comes down to how the store has them tuned; one local grocery store's system freaks out if a fly lands on the scale, whereas the local Walmart doesn't seem to care if the weight is ten pounds more or less than what it thinks it should be.
