One possible application for kiosk computers would be to use them for self-checkout at retail stores. Customers could scan their items and pay for them without having to wait in line for a cashier. This could potentially reduce labor costs for the store and make the checkout process faster and more efficient. Costs for such a project would include the cost of the kiosks themselves, as well as any software or hardware that would be necessary to make them work. There would also need to be some initial training for employees on how to use the new system. Payback period would likely be fairly short, since the kiosks would quickly pay for themselves in reduced labor costs.