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This study analyzes the effectiveness of using BNI Bank’s QRIS in improving transaction convenience and efficiency at the canteen of Universitas 17 Agustus 1945 (UNTAG) Surabaya. The research was conducted by a team led by Ida Ayu Nuh Kartini, S.E., M.M., together with students of the Management Study Program, during November–December 2025. The rapid development of digital banking has encouraged the adoption of QRIS as a standardized non-cash payment system regulated by Bank Indonesia. This study aims to examine the level of QRIS BNI utilization, assess ease of use (application access and QR code scanning), and evaluate transaction efficiency, including time savings, queue reduction, and error minimization. A descriptive quantitative approach was employed using a survey method with a five-point Likert scale questionnaire distributed to 36 respondents consisting of students, lecturers, and administrative staff who had used QRIS at the canteen. Primary data were analyzed descriptively using averages and percentages, supported by relevant literature. The results show that QRIS is perceived as highly effective, with scores above 90% for ease of use (95%), transaction speed (92.78%), reduction of change-related issues (97.78%), support for digitalization (97.22%), and security (91.11%). The main limitation identified is dependence on internet connectivity (85%). Overall, respondents strongly support the full implementation of non-cash payment systems at the campus canteen.

The Marketing Mix strategy is a combination of various marketing elements that include product, price, distribution place, and promotion. The Marketing Mix strategy, also known as the marketing mix is a concept in marketing that explains four main elements that must be managed in an integrated manner to achieve marketing objectives. In general practice, the using of QRIS is a payment standard using a QR code developed by Bank Indonesia and the Indonesian Payment System Association to simplify and accelerate digital transactions. Through VOSviewer analysis, the implementation of QRIS can have a positive impact on the operations and business performance of MSMEs, and the marketing mix strategy in the context of business digitalization becomes an important approach to maintaining MSME competitiveness. The results of the VOSviewer visual map analysis and the review of previous State of the Art research indicate that most existing studies still focus on aspects of QRIS adoption and transaction efficiency alone. These studies generally highlight how digital payment system is able to  improve the speed, security, and convenience of transactions but have not yet widely linked them directly to marketing mix strategies and consumer purchasing decisions. This indicates a research gap in understanding the role of QRIS is not only as a transaction tool but also as part of the marketing strategy that influences consumer behaviour.

The design of the 3:30 Kopi website poster was carried out as an effort to present an effective and modern promotional medium to support information needs and introduce the café’s digital platform to the wider community. In line with the development of the digital era, local SMEs such as 3:30 Kopi are required to remain competitive by utilizing visual media that is both communicative and appealing. This poster functions not only as an information tool but also as a branding strategy to strengthen the café’s identity in the eyes of consumers, particularly in the Ciledug area and its surroundings. The visual concept of the poster was designed with careful consideration of both aesthetics and function. The use of brown and cream tones symbolizes the warm and natural character of coffee, while also creating a friendly and elegant impression. Typography was chosen with a simple yet bold style to ensure information is easy to understand. The main elements, featuring a mockup of the website displayed on both laptop and mobile devices, emphasize the flexibility and responsiveness of the platform, which can be accessed anytime and anywhere. In addition, the inclusion of a QR code provides a modern solution that facilitates quick and practical interaction between the audience and the website. Cultural-inspired ornaments derived from 3:30 Kopi’s signature menu further reinforce its visual identity while adding aesthetic value. Through this poster design, 3:30 Kopi is expected to increase brand awareness, attract new visitors, and strengthen its image as a café that not only offers coffee but also provides a productive social space suited to the needs of modern society.

This community service activity aims to improve the literacy of residents in Penambangan Village through the implementation of a QR Code-based digital library at the Educational Center. The background of this program lies in the low level of literacy in rural areas, which is strongly influenced by the limited access to reading materials and the absence of library facilities. In the current digital era, the need for fast, easy, and affordable access to information has become increasingly important. Therefore, the application of simple technology such as QR Codes is considered an innovative solution to bridge the literacy gap between rural and urban communities. The method used in this activity was Participatory Action Research (PAR), which emphasizes active involvement of the community. The stages of the program consisted of initial observation to identify literacy needs, collaborative planning with local residents, implementation of the QR Code-based digital library, and reflection to evaluate achievements and challenges. This method ensured that the community was not only an object but also an active subject in the process of improving literacy. The results show an increase in reading interest and access to digital literacy, especially among young people. QR Codes installed at several strategic points enabled residents to access various digital reading resources using smartphones. Nevertheless, some obstacles were identified, including limited internet infrastructure and low digital literacy among the older population. Despite these challenges, the program successfully demonstrated that simple, technology-based approaches can significantly enhance literacy in rural areas. In conclusion, the implementation of a QR Code-based digital library supported by a PAR approach can serve as an effective alternative to increase literacy in rural communities. The success of the program strongly depends on collaboration among local residents, academics, and stakeholders to ensure its sustainability in the long term.

Attendance is an essential activity in both educational institutions and companies, serving as an indicator of discipline, presence, and individual responsibility. Conventional attendance systems that still rely on manual journals often face several problems, such as vulnerability to manipulation, data loss, and physical damage. Meanwhile, modern methods such as fingerprint, QR code, RFID, and GPS are not entirely ideal since each has its own limitations in terms of cost, accuracy, user convenience, and potential misuse. For instance, fingerprint systems raise hygiene concerns due to shared use, while QR code and GPS methods are prone to fraud and location spoofing. To address these challenges, this study proposes a face-based attendance simulation system by integrating the YOLOv8 algorithm for face detection and Local Binary Pattern Histogram (LBPH) for face recognition. YOLOv8 was chosen for its ability to detect faces in real time with high speed and accuracy, while LBPH is employed for face recognition due to its robustness in handling variations in facial features and its relatively low computational requirements. This makes the system efficient even when implemented on medium-specification devices. The system was tested on 25 participants with a total of 250 attendance attempts. Based on the confusion matrix analysis, the system achieved outstanding performance with 98.4% accuracy, 98.4% precision, 100% recall, and a 99.2% F1-score. Furthermore, the system automatically recorded attendance dates and times with an average latency of 69.185 ms, proving its capability to operate quickly and reliably in real-world scenarios. Nevertheless, several limitations were observed, such as decreased accuracy when the face moved too quickly during image capture, as well as potential performance degradation under extreme lighting conditions. Despite these challenges, the proposed system demonstrates excellent performance and offers a promising solution for efficient, hygienic, and fraud-resistant attendance management applicable to both educational and professional environments.

Mail management in higher education institutions, particularly at the Nurul Fikri Integrated Technology College (STT), is still carried out manually or conventionally. This process involves physically recording and distributing letters, which in practice often creates various obstacles. Some common obstacles include the long time required to manage letters, the risk of document loss or damage, and the high possibility of errors in letter numbering. Furthermore, the document validation process is also less effective due to the lack of a system that supports electronic signatures or digital verification of document authenticity. Based on these conditions, this study aims to design and develop a digital system that can help manage letters more efficiently and securely. This system is designed not only to speed up the administrative flow of correspondence but also to simplify the document validation process through the application of digital technology. Thus, this system is expected to reduce administrative errors, increase work efficiency, and ensure the security and validity of official documents. The method used in this study is Design Thinking, which consists of five main stages: empathize, define, ideate, prototype, and test. This approach enabled researchers to deeply understand user needs, explore various alternative solutions, and create an intuitive and user-friendly interface design for all parties involved in the administrative process. The research results showed that the designed system can accelerate the administration process for official letters and documents. The embedded superior features include digital validation and electronic signatures integrated with QR Code technology, thus providing a higher level of transparency and security in document management within the university environment.

The Printed Circuit Board (PCB) industry increasingly relies on automation and digitalization to improve efficiency and accuracy in production and distribution processes. One common practice is the use of labels containing product information in the form of barcodes or QR codes, which allow automatic data input and reduce the risk of human error compared to manual writing. However, in current practices, these labels are only attached to PCBs after they have been placed inside casings. This creates a significant limitation, as access to the label information requires disassembling the casing whenever product verification, tracking, or troubleshooting is needed. Such a process not only consumes additional time and resources but also increases the risk of damaging the product. To overcome this challenge, this study proposes the development of a traceability system designed to accurately monitor the location, identity, and status of PCBs throughout the distribution process. The system was implemented as a web-based application capable of generating and printing product information labels in the form of barcodes and QR codes. Each label functions as a unique identifier, ensuring that every PCB can be distinctly tracked from production to final product assembly. All data associated with the labels is automatically stored in a centralized database, providing real-time accessibility, simplifying information management, and enabling faster decision-making in the event of quality control issues. System evaluation was carried out through rigorous testing, which showed a 100% success rate in generating, storing, and retrieving product information without errors. The findings indicate that the proposed traceability system is both effective and efficient, and it offers a practical solution for industries seeking to enhance supply chain visibility, improve product accountability, and reduce operational inefficiencies in PCB distribution and lifecycle management.

PT Udara jadi Bersih Bekasi is a company engaged in testing Heating, Ventilation, and Air Conditioning (HVAC) systems. So far, the process of recording test results is still carried out manually using paper media. This process poses a number of obstacles, such as delays in recording, potential input errors, and limitations in accuracy and data storage. This condition also has an impact on delays in the submission of test results information to supervisors, who should need fast and accurate data for decision-making. To answer this problem, a web-based application is needed to design a web-based application that is able to digitize the entire workflow of recording and reporting HVAC test results. With a web-based system, data can be managed centrally, more structured, and easily accessible at any time. This application is also equipped with QR Code technology to speed up access to test results. Supervisors and technicians only need to scan the code for complete information, so they no longer rely on manual searches that are time-consuming and prone to serious errors in technical documentation. The design of this application uses the Waterfall method which consists of the stages of needs analysis, system design, implementation, testing, and maintenance. UML is used as a tool to describe business processes and system activity flows in detail, so that development can be carried out more systematically, efficiently, and in a targeted manner according to applicable software engineering standards. With the implementation of this application, PT Udara jadi Bersih Bekasi is expected to be able to improve operational efficiency, reduce recording errors, and speed up the information distribution process. In the end, this digitalization will support companies in providing services that are more professional, accurate, innovative, reliable, and according to the needs of the modern HVAC industry in the era of global digitalization.

QRIS (Quick Response Code Indonesian Standard) is a national digital payment innovation launched by Bank Indonesia to strengthen Indonesia’s digital and economic sovereignty. By integrating various payment platforms into a single QR code standard, QRIS simplifies domestic transactions—especially for Micro, Small, and Medium Enterprises (MSMEs)—while reinforcing state control over financial infrastructure and data flows. This policy reduces reliance on international payment networks such as Visa and Mastercard, which previously dominated digital transactions and stored data abroad. On a global scale, QRIS functions as a tool of digital economic diplomacy through cross-border payment initiatives like ASEAN Pay, enabling Indonesia to expand its influence in the global digital payment ecosystem. However, the United States has criticized QRIS, arguing that it restricts access for foreign companies and poses a barrier to trade. In response, the Indonesian government asserts that QRIS is designed to protect national interests while promoting fair international collaboration. This study employs a normative juridical and descriptive qualitative approach to analyze QRIS-related regulations, its impact on digital sovereignty, and its implications for international trade relations. Secondary data is sourced from literature studies and official documents. The findings reveal that QRIS plays a vital role in accelerating MSME digital transformation, enhancing financial inclusion, and strengthening Indonesia’s bargaining position in global digital finance. Ultimately, QRIS stands not only as a transaction tool but also as a strategic symbol of Indonesia’s digital independence and competitiveness in the international financial landscape.

This UMKM socialization activity aims to develop the digital competence of UMKM actors in order to create digital entrepreneurs who can compete with the complex dynamics of today's market. With the digitalization of UMKM actors, It is anticipated that UMKM owners will recognize the significance of strengthening their understanding of financial management, marketing strategies, and the application of appropriate technology, so that they can position their businesses effectively and efficiently. This activity uses the Lecture and Drill and Practice methods which can attract the public to join in the activity. The data from this study reveals, (1) The socialization of UMKM digitalization provides benefits for the development of UMKM businesses in Purwodiningratan Village, (2) Increases digital competence for UMKM actors in the use of digital marketing platforms such as: marketplaces, digital payment methods using QR Code scans (QRIS), and digital financial records, and (3) UMKM actors are able to practice making digital payments in the form of QR Codes (QRIS) independently so that digital entrepreneurs can develop in Purwodiningratan Village.

With 65 million entities, micro, small, and medium enterprises (MSMEs) form the backbone of the Indonesian economy, contributing around 61% of the country's gross domestic product (GDP) and employing 97% of the working population. Despite their strategic role, most MSMEs still face various challenges, such as low adaptability to changes in the business environment, lack of planning strategies, minimal innovation, and limitations in utilizing technology. On the other hand, current consumer behavior increasingly demands quality products and practical services, including in terms of payment systems. Along with the development of the digital era, non-cash payment systems, such as e-money and QR codes, have experienced rapid growth and become important elements in encouraging financial inclusion and transaction efficiency. QRIS (Quick Response Code Indonesian Standard) is present as an innovative solution that allows MSMEs to make transactions quickly, safely, and easily by simply scanning a QR code. Realizing the importance of utilizing this technology, the community service (PkM) team conducted training activities on the creation and use of QRIS for the "Zea Ice" Orange Juice micro business actor in Deltasari Indah, Sidoarjo, East Java. This activity includes QR code creation, printing, and attaching barcodes to kiosks, as well as technical education related to their use. This initiative is expected to increase transaction efficiency, encourage the implementation of digitalization, and increase the competitiveness of MSMEs in an increasingly competitive market.

In the current digital era, SMEs in the culinary sector face challenges in adopting technology to improve operational efficiency. One solution to address this issue is the use of a simple and cost-effective QR Code-based application. This study aims to develop and implement siMenu, an application that provides table, order, and product management solutions without integrating complex digital payment systems. The method used is Project-Based Learning (PBL), which allows the development of technical skills while designing a sustainable business model through Business Model Canvas (BMC). The results show that siMenu successfully improved operational efficiency for SMEs, reduced ordering errors, and provided an easy-to-adopt solution with low implementation costs. However, challenges in application development and building user trust remain obstacles. The conclusion of this study is that simple digital solutions like siMenu can help SMEs in the culinary sector digitally transform and stay competitive in an increasingly evolving market.