What is a Digital Membership Card? A Thorough Explanation of Features, Benefits, and Implementation Methods for Marketers
A digital membership card is a service that provides membership functionality within a smartphone app to manage user information and store visit points. It eliminates the risks of "forgetting" or "losing" cards, which were unavoidable with traditional paper or plastic versions, and allows companies to centralize customer data and enhance promotional strategies. In this article, we provide a systematic explanation for marketing and sales promotion managers, covering the basic functions of digital membership cards, the benefits of implementation, specific creation methods, and the popular use of LINE Mini Apps. If you are looking to improve customer experience through digitalization and strengthen your company's competitiveness, please read on.
1. What is a Digital Membership Card: Definition and 5 Key Functions
A digital membership card is a digital service that primarily provides membership functionality on a smartphone app, allowing for the centralized management of user information, visit history, and point balances.
Replacing the physical paper or plastic membership cards that were previously mainstream, this system is being adopted by many companies and stores as it combines digital convenience with data utilization capabilities.
Digital membership cards are equipped with features that not only improve the customer experience but also enable companies to promote efficient customer management and customer acquisition strategies.
The five main functions are as follows.
Visit History and Purchase History Management Function
You can accumulate data on the number of visits and the products or services purchased by each customer, which can be utilized for analysis and personalized responses.
Email and Message Sending Function to Members
It is possible to deliver real-time announcements and campaign information directly.
Point Granting Function via Campaigns
By awarding points based on store visits or purchase amounts, you can expect to increase customer loyalty.
Coupon Distribution Function
You can send coupons on occasions such as birthdays or anniversaries, which can be used to encourage repeat visits or re-engage dormant customers.
POS System Integration Function
By linking accounting information and product data with the digital membership card, you can realize customer-specific purchase analysis and more efficient inventory management.
By combining these functions, companies can deepen their relationships with customers and build continuous engagement.
2. Four Strategic Benefits of Introducing Digital Membership Cards
The introduction of a digital membership card goes beyond simply digitizing a card; it has a significant impact on a company's overall marketing strategy. Here, we explain the four strategic benefits gained from implementation.
Management efficiency of member information is dramatically improved
By linking the digital membership card with the store's POS register or reservation management system, user information is centrally managed online.
With traditional card-based membership cards, additional work was required to confirm names or member IDs and award points when a customer forgot their card. With digitalization, checking visit history and awarding points proceeds smoothly, significantly reducing reception time at the store.
Furthermore, it leads to cost reductions and eliminates the need for physical card inventory management.
Expectations for increased usage rates of membership cards
Even for segments that previously avoided issuing membership cards because they "did not want to carry physical cards" or "found it troublesome to keep them in their wallets," there is a high possibility that they will accept an app without resistance.
Also, by utilizing smartphone notification functions to deliver campaigns, coupons, reservation confirmations, and the latest information, you can maintain customer interest and promote store usage.
Furthermore, detailed approaches such as "re-engagement coupons" to encourage visits from customers who have not visited for a certain period can be realized.
Promotional measures by attribute using member information become possible
With a digital membership card, you can finely segment customers based on gender, age, residential area, and other factors using membership information, and deliver information optimized for each segment.
You can realize promotions tailored to individual needs, such as recommending related products based on purchase history or delivering coupons for birthdays and anniversaries.
While traditional paper membership cards relied mainly on mass-distributed flyers and direct mail, digitization allows you to flexibly and quickly deploy promotional measures online.
Reducing advertising budgets and strengthening self-driven customer acquisition
By promoting repeat visits through digital membership cards, you can reduce dependence on reservation sites and advertising media, allowing you to approach customers directly.
Since you can deliver company campaign information and coupons directly via messages or push notifications, you can reduce advertising placements for repeaters and cut advertising costs.
Furthermore, by linking with a reservation management system, you can simultaneously achieve operational efficiency and stronger customer acquisition, such as grasping real-time reservation status, completing reception via QR code scanning, and preventing no-shows by sending reservation reminder messages.
3. How to Create a Digital Membership Card: 3 Implementation Methods and Selection Criteria
There are broadly three methods that companies can choose from when implementing a digital membership card.
It is important to understand the characteristics of each and select the method that is most optimal for your company's situation.
In-house Development (Full Scratch Development)
You build an app with unique features from scratch in-house, while considering the store's brand and taste.
The advantages are that it can be developed as a made-to-order product tailored to your company's nature, such as a membership rank system or unique point-granting rules, and that maintenance is easier to handle.
However, development generally takes time and money.
It is necessary to have a specialized development team in-house, and continuous resources are required for maintenance and feature additions after release.
It can be said to be a suitable option for large companies or companies with extremely specific requirements.
Utilizing Native App Development Services
This is a method of requesting a development company with specialized knowledge to develop an app exclusively for your company.
It is chosen when you want to create a made-to-order app even if you do not have an environment for developing apps from scratch in-house.
Because you are requesting a specialized development company, it is an easy means for many companies to adopt, but it is necessary to be aware that maintenance support after release varies depending on the service provider, and that there are separate costs for developing additional features.
Since costs and schedules increase or decrease depending on requirements, prior estimation and clarification of specifications are important.
Utilizing LINE (LINE Mini App)
This is a method of providing a digital membership card on "LINE," one of the largest communication apps in Japan, which boasts 99 million monthly active users in Japan (as of the end of June 2025).
By using the "LINE Mini App," a web application that allows you to provide your own services within the LINE app, you can issue digital membership cards and send messages.
Users do not need to download a new app and can start using it just by scanning a QR code, so the barrier to entry is extremely low.
Although implementation methods and costs will be explained in detail in the next chapter, it is an effective option for companies that want to implement quickly while keeping costs down.
Criteria for Selecting an Implementation Method
✅Cost
✅Uniqueness
✅Implementation Speed
✅Usage Barrier
✅Feature Richness
It is important to evaluate these comprehensively.
While in-house development has very high uniqueness, it is costly and takes time to implement.
Native app development services have high uniqueness and rich features, but costs fluctuate depending on requirements, and you need to have users download the app.
LINE Mini Apps have the characteristics of being able to keep costs down depending on the implementation method, having a low usage barrier, and having a relatively fast implementation speed.
Let's select the optimal method by comprehensively considering your company's budget, implementation purpose, required features, and target customer base.
4. The Superiority of Digital Membership Cards Utilizing LINE Mini Apps
LINE Mini Apps have been attracting attention in recent years as a means of implementing digital membership cards.
Their superiority can be understood from both the user's and the company's perspectives.
The biggest feature of LINE Mini Apps is that the user's usage barrier is extremely low and convenience is high.
Users do not need to download a new app, and they can start using a digital membership card on LINE without any hassle just by scanning a QR code that leads to the service.
Complicated procedures such as registering a name or email address are also unnecessary.
Because it is provided on the LINE platform, which more than 99 million people already use daily, it is easily accepted by a wide range of age groups, from young people to the elderly.
From a company's perspective, the ability to seamlessly link with a LINE Official Account is a major strength.
When having users register for a digital membership card via a LINE Mini App, you can have them become friends with your LINE Official Account, making subsequent communication easier.
Furthermore, the ability to acquire customer information and purchase history when the service is used is also important (however, user consent is always required to acquire and use user IDs and usage data).
By utilizing the acquired data, it is possible to automatically deliver surveys the day after a store visit, or deliver personalized coupons and notifications based on user behavior data.
LINE Mini Apps have scalability that can be utilized for various purposes, not just membership card functions, but also mobile ordering, reservation reception, and waiting list systems.
For stores that require reservations, you can also send reminders of reservation dates and times via LINE messages, which is also effective as a countermeasure against no-shows.
In this way, the implementation of a digital membership card utilizing a LINE Mini App can be expected to have complex effects such as an increase in the number of LINE Official Account friends, promotion of repeat visits, improvement of engagement, and turning customers into fans.
Note that LINE Official Accounts also have a simple membership card function called "Shop Card".
You can grant points by having customers scan a dedicated QR code when visiting or paying, and you can freely set card points and usage conditions.
If the purpose of implementation is only to grant and manage points, a Shop Card is sufficient, but if you want to implement more advanced functions (detailed customer data analysis, complex point rule settings, external system linkage, etc.), we recommend considering a LINE Mini App.
There are two ways to implement a LINE Mini App: "contracted development" and "in-house development."
Contracted development is a method of choosing a development company and having the specifications and content of the LINE Mini App customized made-to-order according to the issues and needs of the company or store.
Because the degree of freedom is high, it is suitable for companies that want to link with existing systems or strongly emphasize their own brand or colors.
Since costs and schedules fluctuate depending on the content, they are subject to consultation.
In-house development is a method of performing development in-house, where you design and develop a system according to your store's issues and needs.
Since documentation for developers is published, in-house development is also an option for companies that have engineer resources in-house.
Note that fourglobe Inc. has continued to be a certified partner in the contracted development category for four consecutive years since the establishment of the Technology Partner program for the LINE Mini App division in 2022.
5. Practical points to keep in mind for a successful implementation
To ensure the successful implementation of a digital membership card, there are several practical points that must be addressed in advance. Careful preparation during the planning stage is the key to achieving a smooth transition and high effectiveness.
Transition Preparation
The most important point is to decide in advance how to migrate user information.
If you are already operating paper or card-type membership cards, you need to clarify how to migrate existing member data to the digital membership card.
Standardize operations within the store and develop manuals so that all staff can respond using the same procedures.
Since paper membership cards and digital membership cards will coexist during the transition period, it is essential to define in detail how to explain this to customers, how to transfer points, and the response flow in case of trouble.
Possibility of Integration with Existing Systems
Verify in advance whether the digital membership card can be integrated with the systems you currently use, such as POS systems, reservation management systems, and customer management systems.
Check for API integration, data format compatibility, and the feasibility of real-time synchronization, and be sure to budget for and schedule system modifications or customizations as necessary.
Staff Training and Manual Development
Conduct training so that all staff can understand and handle the operation of the digital membership card, how to guide customers, and troubleshooting.
Especially in environments where staff with varying levels of IT literacy work together, careful education and easy-to-understand manuals are the keys to success.
Plan and Implement Customer Awareness and Transition Promotion Measures
A smooth transition can be achieved by clearly communicating the benefits of the digital membership card to customers and preparing incentives (such as awarding points upon registration or distributing exclusive coupons) to encourage the switch.
Utilize multiple channels such as in-store POP displays, websites, and social media to repeatedly disseminate information.
By keeping these points in mind and proceeding with the implementation in a planned manner, the digital membership card will become a powerful tool that simultaneously achieves improved customer satisfaction and strengthened corporate competitiveness.
Thank you for reading to the end once again.
■ Leave the implementation of membership card services to fourglobe!
fourglobe is a certified partner in a total of three categories: the LINE Technology Partner Mini App division (contract development division), the Communication division, and the LINE Sales Partner division. We have a wealth of experience in supporting digital marketing over many years and possess particularly advanced knowledge and know-how for implementing LINE marketing. Please feel free to consult with us regarding proposals for improving marketing measures, as well as the implementation of tools such as advertisements and LINE Mini Apps that are tailored to your business operations!
