# How American Express Tracks Your Spending Habits Across Different Stores > A system that links store-specific product codes to universal manufacturer codes to help consumers track their spending and stay within personal budgets. - **Patent:** US 7672870 - **Original title:** System and method for monitoring consumer purchasing activity - **Owner:** American Express Travel Related Services Co Inc - **Granted:** 2010 - **Status:** Public domain (expired) - **Times cited:** 36 - **Field:** finance, software, consumer_electronics ## What it does This patent describes a method for a central processor to bridge the gap between different retailers' internal tracking systems and universal product standards. It takes a store's specific Stock Keeping Unit (SKU) and maps it to a manufacturer's Universal Product Code (UPC). By doing this, the system can categorize purchases automatically regardless of which store the item was bought at. For example, if you buy a gallon of milk at a grocery store and a gallon of milk at a pharmacy, the system recognizes both as 'Groceries' and subtracts the cost from your pre-set monthly food budget. ## What it does NOT cover - Does not cover simple transaction logging that lacks the step of mapping store-specific SKUs to universal UPCs. - Does not cover systems that only track spending at a single retailer without cross-referencing manufacturer-level data. - Does not cover manual budget entry where the user must categorize each purchase themselves. ## The clever bit The innovation is the network-level association of retailer-specific SKUs with universal UPCs, allowing a bank to 'see' the item inside the transaction, not just the store where the transaction occurred. ## Real-world examples 1. American Express spending analysis features 2. Modern banking apps that categorize purchases as 'Groceries' or 'Electronics' 3. Credit card reward programs linked to specific product categories ## Why it matters Before this, tracking personal finances was difficult because different stores used proprietary codes that didn't talk to each other. This patent helped enable the 'automated personal finance' category, allowing credit card issuers to provide granular spending insights directly in mobile apps, moving beyond just showing the merchant name to showing exactly what was bought. ## Frequently asked questions ### What does How American Express Tracks Your Spending Habits Across Different Stores cover? A system that links store-specific product codes to universal manufacturer codes to help consumers track their spending and stay within personal budgets. ### Who owns patent US 7672870? American Express Travel Related Services Co Inc owns this patent, granted in 2010. ### When does this patent expire? This patent is expected to expire on March 2, 2030, when the invention enters the public domain. ### What is patent US 7672870 cited by? This patent has been cited by 36 later patents that build on its ideas. ### What problem does this patent solve? Before this, tracking personal finances was difficult because different stores used proprietary codes that didn't talk to each other. This patent helped enable the 'automated personal finance' category, allowing credit card issuers to provide granular spending insights directly in mobile apps, moving beyond just showing the merchant name to showing exactly what was bought. ### What does this patent NOT cover? Does not cover simple transaction logging that lacks the step of mapping store-specific SKUs to universal UPCs. **Full plain-English explainer:** https://patentbrief.org/patent/us/7672870/amazon-prime **Original patent:** https://patents.google.com/patent/US7672870 --- _Source: PatentBrief — https://patentbrief.org. Patent facts are from public records; the plain-English explanation is PatentBrief's._ ## Related patents Semantically similar inventions in the PatentBrief corpus: - [How a Single Card Can Pay for Transit Using Loyalty Points](https://patentbrief.org/patent/us/10176475/square-point-of-sale) — A system that lets one payment card handle both retail shopping and transit fares, automatically converting loyalty points between different geographic regions to cover travel costs. - [Tracking Shoppers and Store Items for Better Recommendations](https://patentbrief.org/patent/us/11900293/merchant-action-recommendation-system) — This patent describes a system that tracks the location of physical customers, virtual customers, and store items using beacons to generate a combined visual report and recommend actions for merchants. - [How Apps Compare Local Prices and Ratings for Specific Items](https://patentbrief.org/patent/us/10127595/airbnb-dynamic-pricing-smart-pricing) — A system that helps users find and order a specific product from nearby stores by ranking them based on price, ratings, and item attributes like calorie count. - [How Devices Automatically Tag and Monetize Real-World Events](https://patentbrief.org/patent/us/8356005/facebook-photo-tagging) — A system for capturing data about a specific moment or location—like a song playing or a vehicle passing—to automatically trigger online searches and sponsor payments. - [How Square Syncs Inventory Between Physical Shops and Online Stores](https://patentbrief.org/patent/us/10192220/square-capital) — A system that lets store owners toggle items between online and physical sales channels using a single dashboard to keep stock counts accurate everywhere.