A free app for Android, by Tesco Stores.

The Tesco Scan & Shop Mobile Service is an efficient tool for shopping, which allows customers to purchase products in select Tesco stores and retail networks for scanning product bar codes.

How it works:

Use this app to scan items you put in your shopping bag. After you have completed scanning your shopped products, you will be provided with the end-of-trip QR code. Place the code in the check-out area for payment, and that’s it. It provides an organized and more efficient payment system at the store to avoid long queues.

The app is free to download and install on Android devices.