text:  Lunchtime at Costcutter's supermarket here in Ballybuffet, a small town in the north-west of Ireland. This is one of two supermarkets owned by Michael Doherty in the region, and self-checkouts were only recently installed here. So what are the advantages and drawbacks of automated checkouts? A question I put to him in the quieter surrounds of his office. The main purpose of getting self-checkout