Could you elaborate on why? I've also used the system at Waitrose and it's completely painless, so I'd guess if there's a problem it's due to poor implementati

Could you elaborate on why? I've also used the system at Waitrose and it's completely painless, so I'd guess if there's a problem it's due to poor implementation. One particular advantage for me was that I could take my backpack around the shop filling it up, so I'd never have to worry whether I was buying too much to fit. And it also meant I could be sure multi-buy discounts have processed before I got to the checkout, instead of having to check my receipt and make a fuss about it if they didn't. The only minor issue I noticed is that if you're buying alcohol you need a member of staff to confirm your age, and they often don't have dedicated staff on the QuickCheck machines when it's quiet, but even then it still doesn't take long to find someone.