Smart Wi-Fi Door Lock System

Abstract

As technology has advanced, Smart Door Locking systems have also evolved, which also appears to be required after considering rising levels of criminal activities. Thefts like stealing money, jewels or any other documentsfor personal benefit, robbery, and many more from banks, corporate offices, financial and government organizations have prompted the foundationtoraisethesecuritylevel.Thisproject enables owner to be fully in control of locking/unlocking of door despite being miles away from it. Android based this intelligent internal door locking system has been developed for blocking unauthorized entry, trespass, and intrusion. Withremote access, high-level security features, and seamless integration functionality, the suggested system signifies a revolutionary progress in smart lock technology. Theaffordable deployment with improved functionality and user friendlyinterface makes it extremely helpful. This suggested idea is a step ahead in the innovation and revolution of the security levels system. The machine doesn\'t enable the door to open without receiving the signals from the application sent.

Introduction

Due to growing concerns over security and convenience, there is increasing demand for intelligent access control solutions. Traditional mechanical locks have limitations like key loss, duplication, and lack of remote control. In response, IoT-based smart locks—particularly Smart Wi-Fi Door Lock Systems—have emerged as more secure and user-friendly alternatives for homes, offices, and industries.

These systems provide:

• Remote locking/unlocking via smartphone apps

• Access logs & real-time alerts

• Integration with smart home devices (cameras, alarms, voice assistants)

• Biometric authentication and AI-based anomaly detection

• End-to-end encryption for secure communication

Project Objective

The project aims to develop a low-cost, secure, and easy-to-install Smart Wi-Fi Door Lock tailored to the Indian market, addressing limitations of expensive commercial products. It uses open-source platforms and common components, reducing cost while retaining key security features. The system is user-friendly, requiring no technical expertise for setup.

Market Outlook

India’s smart lock market is growing rapidly—from $1.3 billion in 2024 to an expected $12.6 billion by 2033 (CAGR of 28.7%), driven by digital awareness and security needs. Major brands like Godrej, Assa Abloy, and Dormakaba are investing heavily.

Proposed Features

• Low cost: No proprietary hardware; open-source software

• Easy installation: Plug-and-play system for non-technical users

• Security: Strong encryption, real-time intrusion alerts, offline access, and battery backup

• Versatility: Suitable for homes, offices, factories, and financial institutions

Hardware Components

1. ESP8266 NodeMCU: Microcontroller with Wi-Fi, ideal for IoT projects

2. SG90 Servo Motor: For lock actuation, low-cost and PWM-controlled

3. Rocker Switch: Manual ON/OFF control

4. Reed Switch Sensor: Detects door open/close status using magnetic field

5. 9V Battery: Portable power source for embedded systems

System Implementation

• Hardware is assembled using ESP8266, servo motor, reed sensor, and other components.

• Code is written for the Arduino IDE and uploaded to ESP8266.

• Intrusion alerts are sent to the user’s email.

• The mobile app allows remote lock/unlock and status monitoring.

• Circuit includes connections for IR sensors, relays, buzzer, switches, and power.

Testing & Results

The system was tested under different conditions:

• Manual intrusion detection worked reliably, triggering alerts.

• Mobile app control successfully locked and unlocked the door.

• All components functioned correctly in real-time scenarios, confirming the system’s practicality and responsiveness.

Conclusion

In conclusion, in this research, we have discussed the key points of the chosen subject in detail. The results present significant trends and observations of relevance to the subject matter. On assessment and review, we have exposed strengths and weaknesses of current methodologies. The evidence supports our initial hypothesis underpinning the research agenda. Additionally, pragmatic uses of this research can be beneficial to academia and industrial application. Found limitations providethescopefor further research. Applied methodologies were fruitful in gathering genuine information. Our researchsignificantly contributes to the literature. Further study in the field is needed for further understanding. Finally, this research provides an effective platform for future development.

References

[1] G.S.Chitnis,N.DeshpandeandA. Shaligram,\"Aninvestigativestudyfor smarthomesecurity:Issueschallenges and countermeasURES.Hardware Applicationuser\",Wirel.Sens.Netw,vol. 8, pp. 61-68, 2016 [2] L-K.HwangandJ.-W.Baek,\"Wireless accessmonitoringandcontrolsystem basedon digital doorlock\",IEEE TransactionsonConsumer Electronics, vol. 53, 2007 [3] Y. T. Park, P. Sthapit and J.-Y. Pyun, \"Smart digital door lock for home automation\", TENCON 2009-2009 IEEE Region 10 Conference, pp. 1-6, 2009. [4] C.-H. Hung, Y.-W. Bai and J.-H. Ren, \"Design and implementation of a door lock control based on a near field communication of a smartphone\", Consumer Electronics-Taiwan (ICCE- TW)2015IEEEInternationalConference on, pp. 45-46, 2015. [5] Ibrahim Adnan, AfhalParavath, P. K. Aswin, Shijin Mohammed Iqbal and ShaeezUsman Abdulla, \"GSM based digital door lock security system\", Power Instrumentation Control and Computing (PICC)2015InternationalConference,pp.1-6, 2015. [6] KassemAbdallah, Murr Sami El, Jamous Georges, SaadElie and GeageaMarybelle, \"A smart lock system using Wi-Fi security\", Advances in Computational Tools for Engineering Applications (ACTEA) 20163rd International Conference, pp. 222-225, 2016. [7] NathSomjit, Banerjee Paramita, RathindraNathBiswas, Swarup Kumar Mitra and MrinalKantiNaskar, \"Arduino based door unlocking system with real time control\", Contemporary Computing and Informatics (IC3I)20162ndInternationalConference,pp. 358-362,2016. [8] Wang Yongshun and Yu Shimeng, \"Development of intelligent door lockcontrol system based on cloud platform[J]\", Computer Applications and Software, vol. 2,pp. 144-150,2019.

Copyright

Copyright © 2025 Dr. Abhishek Gupta, Rahul Singh Panwar, Ronak Kumar, Sarthak Verma , Yash Agarwal. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.