Abstract: A system, method, and computer-readable storage medium for enabling an individual to use a purchase-proxy mechanism to conduct a financial transaction from a computing device with an online merchant, whereby the individual is enabled to use stored personal data, such as financial account information and fulfillment information, without having to store the personal data with the online merchant. The system, method, and computer-readable storage medium furthermore enable an individual to change a payment and/or fulfillment option at the time of purchase with minimal inconvenience.

Abstract: A system, method, and computer-readable storage medium for enabling the accurate identification of a product identified by a multiple product identifiers and offered by one or more merchants by using a product-data-identification mechanism via a computing device. The mechanism may enable accurate product-data identification by receiving a product identifier from a computing device, using the received product identifier to obtain one or more forms of data associated with the product identifier from one or more data sources, thereby enabling the mechanism to evaluate data from multiple sources to identify the most accurate product data associated with the product identifier. Data sources accessed by the mechanism may be scored according to the accuracy of their data, and a data system's score may affect how its data is evaluated by the mechanism.