Online supermarket firm Ocado has launched an experimental window shopping experience in which shoppers scan item barcodes printed on wallpaper and schedule a time and place for delivery.

After downloading the Ocado on the Go app to their smart devices, shoppers can browse products pictured along the wall of a unit at the One New Change shopping centre near St Paul's Cathedral in London, UK.

The smartphone app, available for iOS and Android operating systems, lets shoppers collect their scanned items into baskets and sync orders between devices. The app also has a Your Instant Shop feature, which generates a user's typical order based on previous deliveries.

The window shopping wallpaper experiment runs until September 1st, but the app will continue to offer an offline catalogue of 21,000 grocery and homeware items, books and toys thereafter.

Last year, Ocado announced it was the first grocer to launch an Android application.