Techniques for automated mobile transaction processing are provided. A consumer traverses to a web portal or other type of enterprise terminal device of an enterprise and proceeds to shop. During checkout, the portal contacts a transaction service and is delivered back an identifying barcode or Quick Response (QR) code. The consumer uses a mobile device to scan the code and send it to the transaction service. Previously registered payment details of the consumer are located and payment is received from the consumer. The portal is notified that payment is completed by the transaction service.