UK supermarket giant Sainsbury's has begun trialling a service that lets customers scan items as they shop using their phone and pay at the till without unloading their trolley.
To sign up for the 'Mobile Scan & Go' service, customers first download an app from the Apple or Google Play store and register using their Nectar card and their local store.
When they go shopping, they log in to the app with their Nectar card details and scan the 'check in' QR code at the front of the store.
They then use their Android or iPhone's camera to scan items as they shop. The app tracks how much customers have spent and shows savings that can be made with offers and deals.
Once customers have finished their shopping, they scan the 'check out' QR code at the till and pay by cash or card.
The service is currently being piloted with a small number of Nectar card customers at three Sainsbury's stores.
Luke Jensen, group development director, Sainsbury's, says: "Our innovative Mobile Scan & Go technology is fantastic for those wanting to manage their budget or simply those who want a quicker in-store experience."