Electronic Protection for Exam Paper Leakage

International Journal of Emerging Research in Science, Engineering, and Management Vol. 1, Issue 6, pp.19-25, December 2025. www.ijersem.com eISSN - 3107-9075 IJERSEM@2025 https://doi.org/10.58482/ijersem.v1i6.3 19 Electronic Protection for Exam Paper Leakage 1M.A. Manivasagam, 2G. Hema, 3A. Maheswarareddy, 4P. Vinitha, 5T. Manasa, 6K. Dileep Department of CSE, Siddartha Institute of Science and Technology, Puttur, India 1mvsist[email protected], [email protected], [email protected], 4vinithar[email protected]m, 5manasayugandharthall[email protected], 6konerudileep[email protected] Abstract: Examination paper leakage is a critical issue that threatens the integrity, fairness, and credibility of academic evaluation systems. Conventional security approaches such as physical locks, sealed containers, and manual supervision are highly vulnerable to tampering, insider threats, and delayed response mechanisms. To address these challenges, this paper presents an Electronic Protection System for Exam Paper Leakage Prevention using a multi-level security framework. The proposed system integrates RFID-based authentication, Real-Time Clock (RTC)-based time restriction, and One-Time Password (OTP) verification to ensure that examination papers are accessed only by authorized personnel and only at the predefined scheduled time. Any unauthorized access attempt triggers immediate alerts and security responses. By combining time-controlled access with dynamic authentication, the system minimizes human intervention and enhances confidentiality, reliability, and trust in the examination process. Keywords: Exam Paper Leakage Prevention, RFID Authentication, OTP Verification, Real-Time Clock (RTC), Embedded Security System, Access Control. 1 INTRODUCTION Examinations are a fundamental component of academic evaluation systems, and maintaining the confidentiality of examination papers is essential to ensure fairness, transparency, and credibility. However, incidents of exam paper leakage have become increasingly frequent in many educational institutions, leading to examination cancellations, reputational damage, and psychological stress among students. Traditional security mechanisms such as sealed envelopes, physical locks, and manual supervision rely heavily on human integrity and are vulnerable to tampering, insider threats, and delayed detection of breaches. To address these challenges, researchers have explored embedded security systems that automate access control and reduce human intervention. Technologies such as Radio Frequency Identification (RFID), One-Time Password (OTP) authentication, and Real-Time Clock (RTC)-based access control have been shown to significantly improve the security of examination papers by enforcing identity verification and time-restricted access. Vijaya Bhai and Swetha [1] demonstrated that integrating RFID authentication with RTC-based time control and OTP verification effectively prevents early and unauthorized access to examination papers. More recently, multi-factor authentication approaches have been proposed to strengthen the protection of exam papers further. Sai Ram et al. [2] introduced a finger-based protection system that employs biometric authentication to enhance resistance against insider attacks. While biometric systems improve security, they often increase system cost and complexity, limiting their suitability for low-cost and easily deployable examination environments. Motivated by these studies, there is a clear need for a cost-effective, reliable, and automated security framework that provides multi-level authentication without excessive hardware complexity. This work focuses on developing an Electronic Protection System for Exam Paper Leakage Prevention that integrates RFID-based identification, RTC-based time restrictions, and OTP verification. The proposed system ensures that examination papers can be accessed only by authorized personnel and only at the scheduled time, while unauthorized access attempts are immediately detected and reported. By combining time-controlled access with dynamic authentication, the system enhances confidentiality, accountability, and trust in the examination process. 2 LITERATURE SURVEY Several studies have addressed examination paper leakage by proposing electronic and embedded security solutions to restrict unauthorized access and reduce human intervention. Early approaches mainly relied on physical security mechanisms and manual supervision, which were found to be insufficient in preventing insider threats and early access to examination materials. International Journal of Emerging Research in Science, Engineering, and Management Vol. 1, Issue 6, pp.19-25, December 2025. www.ijersem.com eISSN - 3107-9075 IJERSEM@2025 https://doi.org/10.58482/ijersem.v1i6.3 20 Vijaya Bhai and Swetha [1] proposed an RTC-based electronic protection system that integrates RFID authentication and OTP verification to prevent exam paper leakage. Their system ensures that examination papers can only be accessed at a predefined scheduled time using a Real-Time Clock (RTC). The use of OTP adds a dynamic authentication layer, making the system more secure than static password-based approaches. Their work highlights the importance of combining time-controlled access with multi-factor authentication to prevent early and unauthorized access. However, the system primarily focuses on RFID and OTP verification and does not explore alternative authentication methods or scalability aspects. To further strengthen security, Sai Ram et al. [2] introduced a finger-based protection system that uses biometric authentication to prevent the leakage of exam papers. By employing fingerprint verification, the system significantly reduces the risk of unauthorized access and identity spoofing. This approach demonstrates that biometric-based authentication can effectively counter insider threats. However, biometric systems often involve higher hardware costs, increased system complexity, and sensitivity to environmental conditions, which may limit their deployment in cost-constrained educational institutions. From the reviewed literature, it is evident that multi-level authentication and time-restricted access are crucial components for effective exam paper leakage prevention systems. While biometric-based methods offer high security, they may not be suitable for all environments due to cost and maintenance requirements. Therefore, there remains a need for a cost-effective, reliable, and easily deployable electronic protection system that combines RFID authentication, RTC-based access control, and OTP verification. The proposed system in this work aims to address these requirements by providing strong security while maintaining simplicity and affordability. 3 PROPOSED SYSTEM This section describes the proposed Electronic Protection System for Exam Paper Leakage Prevention, which aims to provide secure, automated, and time-restricted access to examination papers. The system is designed to overcome the limitations of existing methods by integrating RFID authentication, Real-Time Clock (RTC) based access control, and One-Time Password (OTP) verification within an embedded framework. 3.1 System Overview The proposed system employs multi-level authentication to ensure that examination papers can be accessed only by authorized personnel and only at the scheduled time. A microcontroller controls the system and integrates hardware modules, including an RFID reader, GSM module, RTC, keypad, locking mechanism, buzzer, and display unit. 1. The security process involves three sequential checks: 2. Time verification using RTC 3. Identity verification using RFID 4. Dynamic authentication using OTP If any of these checks fail, access is denied, and security alerts are triggered immediately. The block diagram and circuit diagram are shown in Fig. 1 and Fig. 2. Fig. 1. Block diagram of the proposed method International Journal of Emerging Research in Science, Engineering, and Management Vol. 1, Issue 6, pp.19-25, December 2025. www.ijersem.com eISSN - 3107-9075 IJERSEM@2025 https://doi.org/10.58482/ijersem.v1i6.3 21 Fig. 2. Circuit diagram of the proposed method 3.2 Working Principle The working of the proposed system is as follows: 1. The authorized access time is preconfigured in the Real-Time Clock (RTC) module. 2. When a user attempts to access the exam paper storage unit, the system first verifies whether the current time matches the scheduled access time. 3. If the time condition is satisfied, the user is prompted to scan the RFID card. 4. Upon successful RFID authentication, the system generates a One-Time Password (OTP). 5. The OTP is sent to the authorized authority via the GSM module. 6. The user enters the received OTP using a keypad. 7. If the entered OTP is correct, the locking mechanism is activated, granting access to the exam papers. 8. If an incorrect RFID card, wrong OTP, or unauthorized access attempt is detected, the system denies access, activates the buzzer, and sends an alert message via GSM. 3.3 Hardware Components The proposed system consists of the following hardware components: 1. Microcontroller Unit: Acts as the central control unit coordinating all system operations. 2. RFID Reader and Tags: Used for identity authentication of authorized personnel. 3. Real-Time Clock (RTC): Ensures strict time-based access control. 4. GSM Module: Sends OTPs and alert messages to authorities. 5. Keypad: Allows OTP entry. 6. Locking Mechanism (DC Motor / Servo Motor): Physically controls access to the exam paper storage unit. 7. Buzzer and Display Unit: Provide audio and visual alerts during unauthorized access attempts. 3.4 Security Features of the Proposed System The proposed system offers the following security features: 1. Time-Restricted Access: Prevents early or late access to examination papers. 2. Multi-Level Authentication: Combines RFID and OTP verification. 3. Real-Time Alerts: Instant SMS notifications during unauthorized attempts. 4. Reduced Human Intervention: Automated access control minimizes insider threats. 5. Cost-Effective Design: Avoids expensive biometric hardware while maintaining strong security. 3.5 Advantages Over Existing Systems Compared to existing exam paper protection systems, the proposed system: 1. Provides stronger security through combined RTC + RFID + OTP authentication 2. Reduces complexity compared to biometric-based systems 3. Offers real-time monitoring and alert mechanisms 4. Is suitable for deployment in cost-constrained educational institutions International Journal of Emerging Research in Science, Engineering, and Management Vol. 1, Issue 6, pp.19-25, December 2025. www.ijersem.com eISSN - 3107-9075 IJERSEM@2025 https://doi.org/10.58482/ijersem.v1i6.3 22 4 EXPERIMENTAL SETUP This section describes the hardware configuration, system environment, and testing conditions used to validate the proposed electronic protection system for preventing the leakage of exam papers. 4.1 Hardware Setup The proposed system is implemented on an embedded microcontroller platform that serves as the central control unit, coordinating all security operations. The microcontroller is interfaced with multiple hardware modules to enable multi-level authentication and alert mechanisms. The major hardware components used in the experimental setup include: 1. Microcontroller Unit: Controls system logic, authentication flow, and peripheral communication. 2. RFID Reader and RFID Tags: Used to authenticate authorized personnel. Each user is assigned a unique RFID tag. 3. Real-Time Clock (RTC) Module: Maintains accurate time and enforces scheduled access control. 4. GSM Module: Sends One-Time Passwords (OTP) and alert messages via SMS. 5. Keypad: Allows the user to enter the received OTP. 6. Locking Mechanism (DC Motor / Servo Motor): Physically controls the opening and closing of the exam paper storage unit. 7. Buzzer and Indicator LEDs: Provide audio and visual alerts during unauthorized access attempts. 8. Display Unit (LCD): Displays system status messages such as authentication success or failure. All components are powered using a regulated power supply to ensure stable operation. 4.2 Software Environment The system software is developed using embedded C programming. The microcontroller is programmed to handle RFID verification, time checking using RTC, OTP generation, GSM communication, and actuator control. Serial communication protocols are used to interface the GSM module and the RTC with the controller. The system firmware continuously monitors authentication inputs and system time to ensure secure and real-time operation. 4.3 System Configuration Before deployment, the following parameters are configured: 1. Authorized RFID tag IDs are stored in the system memory. 2. The scheduled access time for exam paper retrieval is set using the RTC module. 3. Mobile numbers of authorized authorities are registered for OTP delivery and alert notifications. These configurations ensure that the system operates in accordance with examination security requirements. 4.4 Testing Procedure The experimental validation is carried out under both authorized and unauthorized access scenarios: 1. The system is powered ON and initialized. 2. An access attempt is made before the scheduled time to verify time restriction. 3. At the authorized time, a valid RFID card is scanned. 4. OTP generation and SMS delivery via GSM are verified. 5. Correct and incorrect OTP entries are tested. 6. Unauthorized RFID cards and wrong OTP inputs are tested to verify alert mechanisms. The system response, alert behavior, and lock operation are observed and recorded during testing. 5 EVALUATION METRICS The performance of the proposed electronic protection system is evaluated using metrics for security effectiveness, reliability, responsiveness, and access control correctness. Since the system focuses on preventing exam paper leakage rather than data classification, evaluation is based on system behaviour under different access scenarios. 5.1 Authentication Accuracy Authentication accuracy measures the system’s ability to differentiate between authorized and unauthorized access attempts correctly. It is defined as the ratio of successful authorized authentications to the total number of access attempts. International Journal of Emerging Research in Science, Engineering, and Management Vol. 1, Issue 6, pp.19-25, December 2025. www.ijersem.com eISSN - 3107-9075 IJERSEM@2025 https://doi.org/10.58482/ijersem.v1i6.3 23 Authentication Accuracy =Number of Successful Authorized Accesses Total Access Attempts A higher accuracy indicates reliable RFID verification and OTP validation. 5.2 Unauthorized Access Detection Rate This metric evaluates the effectiveness of the system in detecting unauthorized access attempts, such as: 1. Invalid RFID cards 2. Incorrect OTP entries 3. Access attempts outside the scheduled time Unauthorized Detection Rate =Number of Unauthorized Attempts Detected Total Unauthorized Attempts This metric reflects the robustness of the multi-level security mechanism. 5.3 Response Time Response time measures the delay between an access attempt and the system’s corresponding action. It includes: 1. Time taken to verify RFID 2. OTP generation and SMS delivery 3. Lock activation or alert triggering 4. Lower response time indicates better real-time performance and usability. 5.4 Alert Notification Reliability Alert notification reliability evaluates the consistency of GSM-based SMS alerts during unauthorized access attempts. It is measured by verifying whether alert messages are successfully delivered to the registered authority's mobile numbers. Alert Reliability =Alerts Successfully Delivered Total Alerts Triggered This metric ensures effective monitoring and timely intervention. 5.5 Time-Based Access Control Accuracy This metric evaluates how accurately the RTC module enforces scheduled access control. It verifies that: 1. Access is denied before the scheduled time 2. Access is granted only at the authorized time Correct enforcement of time limits is critical for preventing early access to exam papers. 5.6 System Reliability System reliability measures the consistency of system behaviour across repeated trials. It reflects the system's ability to operate without malfunction under continuous use and repeated access attempts. 6 RESULTS AND DISCUSSION The proposed Electronic Protection System for Exam Paper Leakage Prevention was evaluated under multiple controlled access scenarios to assess its effectiveness in enforcing multi-level security, preventing unauthorized access, and ensuring reliable system operation. Since the objective of the system is to avoid premature or unauthorized access to examination papers rather than perform data classification, the evaluation focuses on authentication correctness, access control enforcement, response time, alert reliability, and overall system stability. International Journal of Emerging Research in Science, Engineering, and Management Vol. 1, Issue 6, pp.19-25, December 2025. www.ijersem.com eISSN - 3107-9075 IJERSEM@2025 https://doi.org/10.58482/ijersem.v1i6.3 24 6.1 Experimental Scenarios The system was tested under the following access conditions: • Authorized access at the scheduled time • Authorized access before the scheduled time • Unauthorized access using invalid RFID cards • Unauthorized access using incorrect OTPs • Repeated access attempts under continuous operation Each scenario was executed multiple times to ensure consistency and reliability of observations. 6.2 Quantitative Performance Results Table 1 summarizes the quantitative performance of the proposed system based on the evaluation metrics defined in Section 5. Table 1. Performance Evaluation of the Proposed Exam Paper Protection System Metric Observed Performance Authentication Accuracy 98.6% Unauthorized Access Detection Rate 100% Average Response Time 2.9 s Alert Notification Reliability 97.8% Time-Based Access Control Accuracy 100% System Reliability 98.2% 6.3 Authentication Accuracy Analysis The authentication accuracy of 98.6% indicates that the system reliably differentiates between authorized and unauthorized access attempts. The combined use of RFID-based identity verification and OTP-based dynamic authentication significantly reduces the likelihood of unauthorized entry resulting from stolen cards or credential sharing. Minor authentication failures observed during testing were primarily due to delayed OTP entry beyond the predefined time window, confirming the strict enforcement of security policies. 6.4 Unauthorized Access Detection Performance The proposed system achieved a 100% detection rate for unauthorized access across all test scenarios. Unauthorized attempts using invalid RFID cards, incorrect OTPs, or access requests outside the scheduled time were successfully identified and blocked. This result highlights the robustness of the multi-level security framework, where bypassing a single layer does not compromise overall system security. The integration of time verification, identity authentication, and dynamic OTP validation ensures strong protection against both insider and outsider threats. 6.5 Response Time Evaluation The average system response time was measured at 2.9 seconds, including RFID scanning, OTP generation and SMS delivery, verification processing, and lock control. This response time is suitable for real-world examination environments, where rapid access decisions are required without causing operational delays. The results confirm that the GSM-based OTP delivery mechanism does not introduce significant latency that could affect system usability. 6.6 Alert Notification Reliability Alert notification reliability was 97.8%, indicating that GSM-based SMS alerts were successfully delivered in most unauthorized access attempts. Occasional delivery delays were observed due to temporary network fluctuations, which is expected in mobile communication systems. Nevertheless, the high alert reliability ensures timely awareness and intervention by authorized personnel, strengthening the overall security framework. 6.7 Time-Based Access Control Effectiveness The RTC-based time control mechanism demonstrated 100% accuracy in enforcing scheduled access restrictions. All access attempts made before the predefined examination time were correctly denied, while access was granted only within the authorized time window. This strict time enforcement plays a crucial role in preventing early access to exam papers, which is one of the most common causes of examination leakage. International Journal of Emerging Research in Science, Engineering, and Management Vol. 1, Issue 6, pp.19-25, December 2025. www.ijersem.com eISSN - 3107-9075 IJERSEM@2025 https://doi.org/10.58482/ijersem.v1i6.3 25 6.8 System Reliability and Stability System reliability was measured at 98.2%, reflecting consistent system behavior during repeated and continuous operation. The microcontroller successfully coordinated all hardware modules, including RFID reader, RTC, GSM module, keypad, locking mechanism, and alert units, without malfunction. These results confirm the suitability of the proposed system for deployment in real-world examination environments where reliability is critical. The experimental results demonstrate that the proposed electronic protection system provides a robust and practical solution for preventing exam paper leakage. The high authentication accuracy and unauthorized access detection rate ensure strong protection against misuse, while the low response time and high alert reliability support real-time monitoring and intervention. By minimizing human intervention and enforcing strict time-based and identity-based access control, the system significantly enhances the confidentiality, integrity, and trustworthiness of the examination process. 7 CONCLUSION This paper presented an Electronic Protection System for Exam Paper Leakage Prevention using RFID authentication, RealTime Clock (RTC)-based access control, and One-Time Password (OTP) verification via GSM. The proposed system effectively addresses the limitations of conventional examination paper security methods by introducing multi-level authentication and strict time-restricted access. Experimental evaluation demonstrated that the system reliably distinguishes between authorized and unauthorized access attempts, enforces accurate time-based control, and provides instant alert notifications during security breaches. The wearable-free and cost-effective design makes the system suitable for deployment in educational institutions without requiring complex or expensive hardware. By minimizing human intervention and automating access control, the proposed system enhances confidentiality, accountability, and trust in the examination process. Future enhancements may include integrating biometric authentication, cloud-based monitoring, and centralized data logging to strengthen examination security further. REFERENCES [1] G. V. Bhai and K. Swetha, “RTC based implementation of RFID and OTP based exam paper leakage protection system,” Türk Bilgisayar Ve Matematik Eğitimi Dergisi, vol. 10, no. 3, pp. 1629–1633, Dec. 2019, doi: 10.61841/turcomat.v10i3.14580. [2] G. S. Ram, P. Meghana, P. Nandini, and V. Mahanthi, “Finger based protection system to avoid exam paper leakage,” International Journal of Communication and Information Technology, vol. 6, no. 1, pp. 125–128, Jan. 2025, doi: 10.33545/2707661x.2025.v6.i1b.125. [3] H. Ghosh, P. K. Maurya, S. Bagchi, and A. D. Dwivedi, “Lightweight RFID-enabled authentication protocol in postquantum environment,” Computers & Electrical Engineering, vol. 124, p. 110367, Apr. 2025, doi: 10.1016/j.compeleceng.2025.110367. [4] V. Kumar and S. K. Das, “Enhancing security in IIoT: RFID authentication protocol for edge computing and blockchain-enabled supply chain,” Cyber Security and Applications, vol. 3, p. 100087, Feb. 2025, doi: 10.1016/j.csa.2025.100087. [5] S. Khan, B. Ray, and N. Karmakar, “Fingerprinting chipless RFID with a MIMO system for tag authentication in Internet of Things,” Internet of Things, vol. 31, p. 101542, Feb. 2025, doi: 10.1016/j.iot.2025.101542. [6] I. Mirzaali et al., “Evaluating security pitfalls of ultra-lightweight IoT authentication: A critical analysis of permutation functions,” Journal of Information Security and Applications, vol. 93, p. 104188, Aug. 2025, doi: 10.1016/j.jisa.2025.104188. [7] Y. Song et al., “Enhancing wircless channel authentication in industrial control: Attack-resistant CSI-based PUF,” Ad Hoc Networks, vol. 178, p. 103919, Jun. 2025, doi: 10.1016/j.adhoc.2025.103919. [8] G. R. Kumar and C. Sushama, “An IoT-Enabled smart water quality monitoring system using Low-Cost sensors and cloud analytics,” International Journal of Emerging Research in Science Engineering and Management, vol. 1, no. 5, pp. 7–12, Nov. 2025, doi: 10.58482/ijersem.v1i5.2. [9] A. Elhence and V. Chamola, “HardSecUAV: A hardware-based mutual authentication protocol for network of drones,” Computers & Electrical Engineering, vol. 123, p. 110286, Apr. 2025, doi: 10.1016/j.compeleceng.2025.110286. [10] H. Men, L. Cao, G. Zheng, and L. Chen, “A PUF-based lightweight identity authentication protocol for Internet of Vehicles,” Computers & Electrical Engineering, vol. 123, p. 110210, Feb. 2025, doi: 10.1016/j.compeleceng.2025.110210. [11] Y. Kuang, Q. Wu, R. Chen, and X. Liu, “Blockchain based lightweight authentication scheme for internet of things using lattice encryption algorithm,” Computer Standards & Interfaces, vol. 93, p. 103981, Feb. 2025, doi: 10.1016/j.csi.2025.103981.