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 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 .