Techniques for automated transactions are provided. A customer uses a mobile device to interact with a self-service checkout device (SSCO) to perform a transaction. Initially, a unique barcode for the transaction is generated and displayed to the customer, via an attract screen of the SSCO. The mobile device scans the barcode (can be a QR code); this causes the mobile device to communicate with a remote server that identifies the customer. Preferences for the customer are retrieved and the transaction and features of the SSCO are configured based on the preferences. The transaction proceeds with the configured preferences.