Generally speaking, one cashier watches over six or seven payment locations. The backend process takes the "suspended" transaction from the surePOS system and recalls it on the live u-scan system for payment tendering. At that point in time, based on a few factors, such as, is this your first U-scan purchase with your Kroger Plus card, do you have any high shrink items, does the weight of your bagged items vary greatly from the calculated weight of your scanned items, is this a 'random loss prevention' scan, is your Kroger plus account flagged for "high audits", and a few other factors, the cashier will be prompted to go over and do an item for item audit of every item in your purchase.