Original sentence: As such, the benefit to the customer is little, while the benefit to the retailer is in reduced staffing requirements.In addition, many stores also allow customers to pay via check with attendant assistance.Payment on these machines is accepted by card via EFTPOS, or cash via coinslot and bank note scanner.Self checkout manufacturers include NCR (Fastlane), IBM, and Fujitsu (U-Scan).Some retailers have introduced self checkout machines, where the customer is permitted to scan their own items and manually identify items such as fruits and vegetables, and place the items into a bagging area, where the item is weighed.The weight observed in the bagging area is checked against previously stored information to ensure that the correct item is bagged, allowing the customer to proceed only if the observed and expected weights match.There is normally an attendant watching over several self checkout machines
Edited sentence: Payment on these machines is accepted by card EFTPOS, or cash via coinslot and bank note scanner.Some supermarkets have introduced self-checkout machines, where the customer is trusted (to an extent) to scan the barcodes (or manually identify uncoded items like fruit), and place the items into a bagging area (where the bag is weighed, the machine complains vocally when it thinks that something in the bag doesn't seem to weigh what the inventory database lists the weight as).There is normally a supervisor watching over several such checkouts; as such the benefit to the customer is little, the benefit to the supermarket is reduced staffing levels