Some corporations and supermarkets have introduced self-checkout machines, where the customer is trusted to scan the barcodes (or manually identify uncoded items like fruit), and place the items into a bagging area. The bag is weighed, and the machine halts the checkout when the weight of something in the bag does not match the weight in the inventory database. Normally, an employee is watching over several such checkouts to prevent theft or exploitation of the machines' weaknesses (for example, intentional misidentification of expensive produce or dry goods). Payment on these machines is accepted by debit card/credit card, or cash via coin slot and bank note scanner. Store employees are also needed to authorize "age-restricted" purchases, such as alcohol, solvents or knives, which can either be done remotely by the employee observing the self-checkout, or by means of a "store login" which the operator has to enter.
Some corporations and supermarkets have introduced self-checkout machine,s, where the customer is trusted to scan the barcodes (or manually identify uncoded items like fruit), and place the items into a bagging ,area. The bag is weighed and the machine halts the checkout when the weight of something in the bag does not match the weight in the inventory database. Normally, an employee is watching over several such checkouts to prevent theft or exploitation of the machines' weaknesses (for example, intentional misidentification of expensive produce or dry goods). Payment on these machines is accepted by debit card/credit card or cash via coin slot and bank note scanner. Store employees are also needed to authorize "age-restricted" purchases such as al,cohol, solvents or ,knives, which can either be done remotely by the employee observing the self-checkout or by means of a "store login" which the operator has to enter.