content: A-1:  It would probably be marked as "in-transit" until it is either paid for (taken out of inventory) or a certain amount of time passes.  Staff may have to check / recheck items "in-transit" back into inventory.    2) Same as when someone double scans your item; you dispute it and get a refund.    We're moving towards more automation, but I guarentee you that we'll never hit a fully automated grocery store.  People are shitty, and do shitty things, and will do absolutely the shittiest of things to get free food.  Look at people who were printing and sticking barcodes for lower priced items onto higher priced items.   In a fully automated situation, you'd have to pay people to review hours and hours of video to count the stock as it's being checked out.