Never have used self checkout as we always pay with cash or check and never via credit card for groceries and don't have nor want a debit card.
Used to sometimes work with a Diebold field technician. He told me Diebold manufactured, sold, installed, and serviced self checkout equipment for many major chain stores. He said they were so trouble prone they had to have dedicated Diebold technicians either on site or on call 24/7 to keep them up and running and they don't work cheap.
