Sam’s Club, founded in April 1983 and headquartered in Bentonville, Arkansas, USA, is a high-end membership-based retail store under Walmart, established by Mr. Sam Walton. In the early 1990s, Sam’s Club began expanding into international markets. On August 12, 1996, the first Sam’s Club in China opened in Shenzhen. Sam’s Club developed an online shopping platform and a mobile app called “Sam’s Club,” and through its JD.com flagship store, it provided members with additional online purchasing channels. By the end of 2010, Walmart launched Sam’s Club’s online shopping service in Shenzhen. At the end of 2014, Sam’s Club upgraded its private label brand, “Member’s Mark.” In May 2018, Sam’s Club established an independent “cloud warehouse” system, offering a one-hour “express delivery” service based on its self-operated e-commerce platform. By July 2020, the one-hour “express delivery” service covered all cities with Sam’s Club stores. In the fiscal year ending January 31, 2023, Sam’s Club’s total revenue reached $84.3 billion. On November 28, 2023, plans were announced for a Wenzhou Sam’s Club store to open in the first half of 2025, with the exact opening date to be adjusted based on construction progress. As of December 27, 2023, Sam’s Club had opened 47 stores in China, located in 25 cities. On June 7, 2024, Sam’s Club officially launched direct delivery services to Hong Kong. By 2024, Sam’s Club had over 800 stores globally, making it one of the largest membership-based retail chains in the world.
In 2018, Sam’s Club was awarded the “2017 Beijing Commercial Brand Star Store” title. In 2023, Sam’s Club ranked 13th in the global retail brand value top 100 and 135th in the global brand value top 500 in 2024.
As a retail brand under Walmart, Sam’s Club’s application of RFID technology primarily focuses on supply chain management, inventory optimization, and enhancing customer experience. Below are the specific application scenarios and technical implementations of RFID tags:
1. Supply Chain and Product Tracking Management
1.1 Pallet-Level Tracking
Sam’s Club requires suppliers to attach EPC Gen2 RFID tags to pallets shipped to designated distribution centers, such as the DeSoto Distribution Center in Texas. By using RFID location tags on shelves and RFID readers on forklifts, the system can track pallet locations in real-time, optimizing warehouse and logistics efficiency.
1.2 Automated Shelf Management
By integrating shelf RFID tags with product tags, the system automatically identifies product stocking status, reducing the need for manual inventory checks and updating inventory data in real-time.
Sam’s Club, a retail chain under Walmart, has rapidly developed its RFID project. The company has required over 700 suppliers to attach EPC Gen2 RFID tags to goods on pallets shipped to the DeSoto Distribution Center in Texas. Sam’s Club uses RFID location tags on store shelves and has installed interrogators on forklifts. These interrogators track tagged pallets by linking the Electronic Product Code (EPC) on pallet tags with the nearest location tags. Currently, 73 suppliers ship tagged goods to the distribution center, which are then distributed to 40 Sam’s Club stores.
The retailer’s second RFID project aims to ensure the accurate execution of weekly promotions. To achieve this, Walmart has asked suppliers to tag boxes or pallets of promotional items. Walmart spokesperson John Simley explained that the company is installing RFID tags in so-called “hotspots” within stores. These hotspots are highly visible locations, such as the ends of aisles. Tagged pallets carrying promotional items are brought to these hotspots for display.
Staff periodically visit these hotspots using RFID handheld devices to read the location tags on the floor and the tags on the pallets. By connecting to Walmart’s backend system, the handheld devices access the promotion plan. If the required promotional items are not in the correct hotspot, the system alerts the staff. This ensures that the right products are in place when promotions begin, avoiding potential sales losses.
Simley stated, “A promotional flyer for a Friday might feature a specific product, so we need to promote that item accordingly. Before the promotion starts, the product must be placed in the designated hotspot.” If the product does not arrive at the sales point as planned, both Walmart and the supplier could suffer significant sales losses.
Walton said, “You may have heard from many Walmart consumer goods suppliers that tracking promotional items can increase sales of a product by 15 to 30 percent.” She added that Walmart’s internal research shows that promotions executed as planned can increase sales by 38 percent compared to promotions where products do not reach the sales point on time.
Walton explained that Walmart’s third initiative is to determine whether RFID can increase sales across all product categories. The test category is air fresheners, with all suppliers tagging their boxed or palletized products and shipping them to the test location. Walton revealed that the experiment is ongoing but progressing well. She said, “We have seen significant improvements in the inventory status of the test products.”
Research has shown that tagged products shipped to stores experience fewer stockouts compared to untagged products. Simley noted that out of Walmart’s 61,000 U.S. suppliers, 600 have already tagged some of their goods shipped to Walmart’s RFID distribution centers. The company’s new measures for “hotspot tracking” and ensuring product availability do not require suppliers outside these 600 to tag their goods.
2. Pharmaceutical Information Assistance and Accessibility Services
2.1 Voice Prescription Labels
For visually impaired patients, Sam’s Club pharmacies use “talking” RFID prescription labels (ScripTalk labels). These labels are encoded with medication information using ISO 15693-compliant HF RFID printers, allowing patients to access spoken medication instructions through a dedicated reader.
2.2 Label Data Writing
Pharmacy labels support two writing methods: direct printing using RFID printers or manually attaching pre-encoded labels and writing data via a workstation.
Sam’s Club and Walmart pharmacies announced the adoption of a “talking” medication solution, utilizing RFID technology across all retail pharmacies nationwide. This technology, provided by En-Vision America, aims to help visually impaired individuals access prescription information.
Visually impaired individuals often face challenges in accessing information about the medications they are taking. While the font size on prescription bottles can be enlarged, this is not always helpful for some patients.
En-Vision America is a technology company focused on assisting visually impaired individuals. Since 1996, they have provided assistive technologies, including voice-enabled barcode scanners, Braille, and large-print systems.
This solution uses ISO 15693-compliant HF RFID printers and readers, along with reading stations and tags connected to each prescription bottle.
Pharmacies can either print built-in RFID labels using ScripTalk printers or manually attach pre-encoded, one-inch circular ScripTalk labels to the bottom of prescription bottles.
The ScripTalk workstation used in pharmacies is equipped with a USB cable, allowing it to connect directly to a computer running the software. When a patient orders medication and requests ScripTalk service, the pharmacist can either print an RFID-enabled label or place a pre-encoded RFID label at the bottom of the container.
The pharmacist stores the patient’s medication information on the ScripTalk reading station. The built-in RFID reader scans the tag’s unique ID number, and the pharmacist can then enter the relevant medication data into the system. This includes the patient’s name, drug name, dosage, instructions, precautions, doctor’s name, prescription details, expiration date, and more.
Patients have their own ScripTalk reading station at home, which is battery-powered and does not require an internet or power connection. It can be installed on a countertop or wall. When the user places a labeled bottle within the reading range and presses the device’s button, the ScripTalk reading station will verbally announce the label’s content.
Walmart and Sam’s Club began piloting this technology in three pharmacies in 2012 and later expanded it to 1,200 stores. Now, at the request of patients, the company is working to implement this technology across all pharmacies.
3. Inventory and anti-theft management
3.1 Efficient inventory counting
RFID handheld terminals quickly read the shelf commodity information, real-time synchronization of inventory data to the back-office system, reducing manual errors and shortening the inventory time.
3.2 Anti-theft and abnormal monitoring
RFID readers are installed at the exits to monitor unchecked goods and trigger alarms. At the same time through the commodity flow data analysis, to prevent internal or external theft.
Supermarket loss and theft prevention has been a major problem in supermarket management. However, with the introduction of RFID technology, this problem has been effectively solved. RFID technology not only improves the inventory efficiency of the supermarket, but also strengthens the commodity management, especially in the loss prevention and theft prevention, outstanding performance.
3.3 Inventory efficiency significantly improve
The traditional manual inventory method is time-consuming and labor-intensive, and the introduction of RFID technology makes it easy. RFID handheld terminals can quickly read the goods on the shelves of information, greatly reducing the inventory time. At the same time, the system can also be read to the real-time transmission of commodity information to the background management system to realize the instant update of inventory data, so that supermarket managers can quickly grasp the inventory situation, make timely replenishment or adjust the display and other decisions.
3.4 Significantly improve the accuracy of inventory
The traditional inventory method is prone to human negligence, fatigue and other factors lead to scanning omissions, repeated scanning or data entry errors and other issues. RFID technology uses non-contact automatic identification, reducing manual intervention and greatly reducing the inventory error rate. Each RFID tag corresponds to a specific commodity and can accurately and precisely identify the details of each commodity, including commodity code, specification and quantity. Even if the goods are covered or stacked, RFID technology can also be accurately read, effectively avoiding the inventory errors caused by the chaotic placement of goods or difficult to find.
3.5 Effective reduction of labor costs
The efficiency and accuracy of RFID technology makes supermarkets no longer need a large number of staff to participate in the inventory. Only a few people to operate RFID equipment can complete the inventory work, thus saving a lot of labor costs. In addition, the staff can also spend more time on providing customer service, organizing shelves, promotions and other important work, which helps to improve the overall service quality and operational efficiency of the supermarket.
3.6 More detailed commodity management
With the help of RFID technology, supermarkets can grasp the location and flow of goods in the store in real time. Whether on the shelves, in the warehouse or in transit, can quickly locate and track the goods. This helps to detect abnormalities in commodities in a timely manner, such as lost or misplaced commodities, thus strengthening the management and monitoring of commodities. At the same time, RFID tags can also record the production date of the goods, shelf life and other information to facilitate the supermarket to take timely promotions, returns and other measures to reduce commodity losses, reduce operating costs.
3.7 Loss prevention and anti-theft function enhancement
RFID system can monitor the status of goods in real time. When the goods are taken out of the supermarket without going through the normal checkout process, the RFID read-write installed at the exit can detect and issue an alarm in time, effectively preventing the theft of goods. In addition, through the commodity flow data recording and analysis, the supermarket can also trace the destination of the goods, for the possible existence of internal or external theft investigation and prevention.
4. Technical implementation details
4.1 Tag type and compatibility
Passive RFID tags are used, relying on reader power supply activation (in line with ISO 15693 standards); some scenes use light-emitting tags to assist positioning.
4.2 Data writing process
Tag initialization through a dedicated device to write a unique UID or commodity information, and subsequently can be updated through the reader part of the data.
Illuminated RFID tags are tags that integrate RFID technology with an illuminated function, and are mainly used for quick location, search, and identification and tracking in special environments. These tags usually have built-in LEDs or other light-emitting components, which emit light when the tag is activated by the RFID reader, facilitating visual identification by the user. Below are some of the ways they are used and typical applications:
5. The use of luminous RFID tags
5.1 Configure the RFID device
Ensure that the RFID reader is compatible with light-emitting RFID tags and supports the activation of the tag’s light-emitting feature. The reader needs to provide sufficient power to activate the light-emitting components in the tag.
5.2 Tag Installation
Attach or secure the illuminated tag to the target item, such as goods, equipment or storage boxes.
5.3 Tag Reading and Activation
- Enable the RFID reader and set the reading range.
- Scan the tag within the specified range. When the reader detects a tag, the light-emitting function can be activated by a specific command.
- The light-emitting component on the tag will light up to help find the target tag quickly.
5.4 Power Management
- Active illuminated tags: Built-in battery, need to check the power level periodically.
- Passive light-emitting tags: light-emitting powered by energy provided by the RFID reader, usually no need to replace the battery.
5.5 Software Support
- Supporting management software can provide an interface to display the tag ID, item information or location when the tag is triggered to emit light.
6.Application Scenarios
6.1Warehouse Management
- In large-scale warehouses, quickly find specific items or goods on the shelves.
- Auxiliary inventory to avoid manual search errors.
6.2Retail Management
- In stores or logistics centers, for marking goods that require special handling (e.g. promotions, returns).
Equipment Maintenance - In industrial equipment management, to mark equipment to be maintained or important accessories with illuminated labels.
6.3 Medical Industry
- Used to mark items or areas requiring emergency handling (e.g. hazardous materials).
6.4Advantages
- – Quick location: the illuminated feature makes finding the physical location more intuitive.
- Save time: particularly suitable for large-scale item management, reducing manual search time.
- Increased efficiency: Combined RFID reading and luminous function speeds up inventory and identification.
Cautions
- Compatibility：
Ensure that the RFID reader supports the activation function of the illuminated tags. - Energy Requirements：
When using passive tags, it is necessary to check that the power of the reader is sufficient to activate the luminescent function. - Environmental Adaptability：
The luminescent effect may not be visible in bright light environments; tags need to be adaptable in low or high temperature environments. - Tag Life：
Active tags require regular battery replacement; passive tags require durability considerations.
7. Customer Experience Optimization
7.1 Self-checkout and Intelligent Recommendation
RFID tags support self-checkout machines to quickly scan products and reduce queuing time. In the future or combined with shopping data to achieve personalized recommendations.
7.2 RFID tags: intelligent ID cards for supermarket goods
In the supermarket, each commodity is like a member of the supermarket family, and RFID tags are their intelligent ID cards. By affixing RFID tags to commodities, supermarkets are able to realize accurate identification, tracking and management of commodities. These tags not only contain the basic information of the goods, such as name, price, date of production, etc., but also in the flow of goods in the process of real-time update inventory status, location information and other important data. This intelligent management allows supermarkets to operate more efficiently and improve customer satisfaction.
7.3 Inventory Management: Accurate and Efficient, Reducing Waste
The application of RFID tags in supermarket inventory management is particularly prominent. The traditional manual inventory method is not only time-consuming and labor-intensive, but also prone to errors. The use of RFID technology, supermarkets only need to scan the goods through a handheld reader or fixed reader, you can quickly complete the inventory count. This accurate and efficient inventory not only reduces labor costs, but also improves the accuracy of inventory data. In the final analysis, RFID tags can also monitor the inventory status in real time, automatically triggering the replenishment process when the inventory is below the safety stock level, effectively reducing the occurrence of out-of-stock and inventory backlog phenomenon and reducing waste.
7.4 Anti-theft monitoring: no dead zone, more peace of mind
Loss of supermarket goods has always been a headache for businesses. The introduction of RFID tags for supermarkets to provide a more effective means of anti-theft monitoring. By installing RFID tags on the goods, supermarkets can monitor the movement of goods track in real time. Once the goods are taken out of the supermarket without the normal checkout process, the system will immediately issue an alarm to notify the security personnel to deal with. This no-dead-angle anti-theft monitoring method allows supermarkets to operate with greater peace of mind and reduces customers’ shopping concerns.
7.5 Customer Experience: Convenient Shopping, Intelligent Recommendation
RFID tags can also bring customers a more convenient and intelligent shopping experience. In the self-checkout area, customers just need to put the purchased goods into the shopping cart and push them to the RFID self-checkout machine, the system can automatically scan and calculate the total price to complete the checkout process. This fast and convenient checkout greatly shortens the waiting time of customers. It is worth mentioning that RFID tags can also be combined with intelligent recommendation systems to provide personalized product recommendations based on customers’ shopping history and preferences. This intelligent service experience allows customers to feel the care and thoughtfulness of the supermarket.
7.6 Unique insights: RFID tags lead the intelligent transformation of supermarkets
In my opinion, the application of RFID tags in supermarkets is not only a technological innovation, but also an important symbol of the transformation of supermarkets to intelligence and digitalization. Through RFID tags, supermarkets are able to achieve intelligent upgrading of commodity management, inventory management, anti-theft monitoring and other aspects of the upgrade to improve operational efficiency and service quality. In the final analysis, RFID tags can also bring more accurate market analysis and marketing strategy development capabilities for supermarkets to help supermarkets better grasp market trends and customer demand. This all-round intelligent transformation will bring broader development space and business opportunities for supermarkets.
This means that it is worth noting that the application of RFID tags in supermarkets is also facing some challenges and obstacles. For example, the cost of RFID tags, the harmonization of technical standards and privacy protection issues need to be properly addressed. Therefore, in the process of promoting the application of RFID tags in supermarkets, we need to strengthen technical research and development, improve laws and regulations, and enhance industry collaboration to ensure that RFID tags can develop in a healthy and sustainable manner.
8. Conclusion
Sam’s RFID tag application covers the whole chain of supply chain, drug service, inventory theft prevention and customer service, and its technical core lies in the data interaction between tags and readers to realize automated management, improve operational efficiency and meet the needs of special groups.The application of RFID tags in supermarkets opens up a new era of intelligent retailing. We have reason to believe that in the future, with the continuous progress of technology and application scenarios continue to expand, RFID tags will play a more important role in the supermarket, for the intelligent transformation of supermarkets and sustainable development to contribute to a greater force!
9. Frequently Asked Questions
9.1 What technologies does Sam’s Club use to manage its warehouses?
Sam’s Club uses advanced technologies like RFID (Radio-Frequency Identification), automated inventory systems, and real-time tracking tools. RFID tags are attached to products and pallets, enabling efficient tracking, inventory management, and supply chain optimization.
9.2 How does RFID technology improve warehouse efficiency at Sam’s Club?
RFID technology allows Sam’s Club to:
- Track inventory in real-time, reducing manual errors and saving time.
- Automate stock replenishment by monitoring product levels on shelves.
- Improve supply chain visibility by tracking pallets and shipments throughout the warehouse.
- Reduce out-of-stock situations by ensuring accurate inventory data.
9.3 What is the role of automation in Sam’s Club warehouses?
Automation plays a key role in:
- Streamlining operations such as sorting, packing, and shipping.
- Reducing labor costs and human errors.
- Enhancing speed and accuracy in order fulfillment, ensuring faster delivery to customers.
9.4 How does Sam’s Club handle inventory management?
Sam’s Club uses a combination of RFID tags, barcode scanners, and warehouse management systems (WMS) to:
- Monitor stock levels in real-time.
- Automate reordering processes to prevent overstocking or stockouts.
- Optimize storage by analyzing product movement and demand patterns.
9.5 What are the benefits of Sam’s Club’s warehouse management system for customers?
Customers benefit from:
- Faster order fulfillment and delivery times.
- Improved product availability due to accurate inventory tracking.
- Better shopping experiences both in-store and online, as the system ensures shelves are well-stocked and orders are processed efficiently.
9.6 How does Sam’s Club ensure the accuracy of its inventory data?
Sam’s Club ensures inventory accuracy by:
- Using RFID tags and readers to track products at every stage of the supply chain.
- Conducting regular audits and automated inventory checks.
- Integrating data from RFID systems with its warehouse management software to maintain real-time updates.
9.7 What challenges does Sam’s Club face in warehouse management, and how are they addressed?
Some challenges include:
- High volume of goods: Addressed through automation and RFID technology to streamline processes.
- Inventory discrepancies: Mitigated by real-time tracking and regular audits.
- Supply chain disruptions: Managed through advanced forecasting tools and flexible logistics systems.
9.8 How does Sam’s Club’s warehouse management system support sustainability?
Sam’s Club promotes sustainability by:
- Reducing waste through accurate inventory management and minimizing overstocking.
- Optimizing transportation routes to lower carbon emissions.
- Using reusable RFID tags and eco-friendly packaging materials where possible.
9.9 Can small businesses learn from Sam’s Club’s warehouse management practices?
Yes, small businesses can adopt similar practices on a smaller scale, such as:
- Implementing RFID or barcode systems for inventory tracking.
- Using cloud-based warehouse management software to streamline operations.
- Focusing on automation and data-driven decision-making to improve efficiency.
9.10 What is the future of warehouse management at Sam’s Club?
The future likely involves:
- Greater use of AI and machine learning for predictive analytics and demand forecasting.
- Expansion of robotics and autonomous systems for picking and packing.
- Enhanced IoT (Internet of Things) integration for real-time monitoring and optimization.