With self-service terminals, customers can have access to more information and check themselves what is and isn't in stock, and then order stock in using an in-store kiosk.
Kiosks dramatically reduce queueing times for customers so they receive better service. Customers also perceive the actual check-out time to be quicker when they are in charge of the process themselves, and many customers find this empowerment beneficial because they check themselves that any promotional offers are being registered at the till, and can scan items at their own speed.
Self-service is also a highly effective way to deliver a better sense of privacy to a customer, which is very beneficial in contexts like healthcare, where a customer might not wish to discuss their needs with a member of staff, but would rather help themselves at a kiosk. Kiosks also enable staff to be redeployed so they can help customers more thoroughly when they need more specialised assistance.