This document presents the design of an IoT-based digital door lock system that aims to improve security and provide additional monitoring features. The system uses sensors to detect intruders, allows users to remotely view camera footage and control the lock, and can automatically unlock when an authenticated user is detected near the door. It provides advantages over traditional locks like remote access and family member tracking. The system consists of hardware components like a Raspberry Pi controller, sensors, camera and Bluetooth/WiFi modules. The software includes modules for user registration and authentication, remote lock control, location tracking, messaging and accessing the event history log.

1. PRESENTED BY,
ARAVIND M
MEGHA MAHESH
NANDU B RAJAN
S LEKSHMI PRIYA
ARUNIMA RAMAKRISHNAN

2. INTRODUCTION
Digital door locks have been widely used in households and
offices.
In many cases, an intruder has tried to penetrate a private
area by circumventing the lock.
Here we design and implement an IoT-based digital door
lock to reduce the damage of digital door lock tampering and
to enhance the various security and monitoring functions
using IoT technologies.
The system also provides feature for tracking family
members and contains a provision for broadcast messaging.

3. OBJECTIVES
• Detecting an intruder who tries to invade by applying physical
force to the lock.
• The user can remotely control the door lock after reviewing the
image.
• The controller can detect a valid user approaching the digital door
lock, if he is carrying the mobile device, and will open door lock
automatically.

4. SCOPE AND SIGNIFICANCE
• The lock was designed to improve user convenience by allowing
him to check the image of a valid visitor and open or close the door
lock remotely.
• Another efficient system function is that when a valid user
approaches the door, the door lock system opens the door without
additional operations.

5. EXISTING SYSTEM
 The existing system largely consists of physical lock and
keys.
 The problem with existing system is that the physical key is
easy to manipulate also for multiple doors one needs to
carry multiple keys.

6. LIMITATIONS OF EXISTING SYSTEM
In traditional locking mechanism we need to carry physical
key with us.
In other digital locks we cannot identify the intruder.
If someone tries to break the lock we wouldn't get informed.

7. PROPOSED SYSTEM
 LOCKING FEATURE : Lock and Unlock the Door Lock by tapping. Also show the status of Door Lock.
 OPEN LOCK AUTOMATICALY : Automatically open the door when the authenticated devices come
near the door using bluetooth and ultrasonic sensor.
 VISITOR : Capture the image and sent as alert when someone press the calling bell. Provide a
provision to unlock the door for the visitor remotely.
 FAMILY TRACKING : Track the current location of family members.
 MESSAGING : Give Broadcast messages to all members of the family.
 THREAT ALERT : Alert the family members in any case of threat like someone tries to break the door
using vibration sensor. Alert with image captured.
 VISITOR'S HISTORY : Store the Door accessing history. History can be cleaned by admin.

8. ADVANTAGES OF PROPOSED SYSTEM
 The development of this system will be using the android
phone as to open the door via Bluetooth into the proposed
system.
 The proposed system will function to open the door and
notifies the mobile device with attacker's when the rupture
force happen.
 Development of the system can increase the efficiency of
the security on the house.

9. SYSTEM OVERVIEW

10. MODULES
 HARDWARE MODULE
 SOFTWARE MODULE

11. HARDWARE MODULES
 Microcontroller
 CAMERA
 SENSOR
BLUETOOTH
 WIFI

12. MICROCONTROLLER
• A Raspberry Pi control board that is
mounted in the lock.
• The controller detects physical impacts
applied by a visitor, and notifies the
user's mobile device.
• Important function of the controller is
automatically opening or closing the door
when a valid user comes near.

13. CAMERA MODULE
• If a physical impact is applied on the lock, the image will be
captured and sent to the mobile device.
• Pi Cam is used to capture images according to sensors.
• If the visitor press the calling bell, their image will also be captured
and sent to the user’s mobile device so that they can open the door
remotely.

14. SENSOR MODULE
• Vibration sensor is used to detect the physical impact on the lock.
• Ultrasonic sensor is used to recognize the proximity of the user.

15. BLUETOOTH MODULE
• Bluetooth module is used for communicating with the mobile
device.
• When a valid user accesses the door holding an object, it is difficult
to operate the door lock.
• Then the controller communicates with the mobile device via
bluetooth and opens the door automatically.

16. WIFI MODULE
• This module is used to establish connection with smartphone and
help to access device remotely.

17. SOFTWARE MODULES
 Registration
 Login
 Lock
 Tracking & Messaging
 History

18. REGISTRATION MODULE
• The module will provide the facility for a user to activate his/her account.
• Customer registers using a unique Lock ID
• An authentication mail i.e., an OTP is sent to provided contact number.
• The registration process allows the user to activate his mobile app for the
specific lock with given Lock ID.
• The first registered member will be the admin and all others users. Admin can
only authenticate other user to get registered by key generation process.
• Admin registers using the lockid given by the provider whereas users registers
using the key which is generated by admin.

19. LOGIN MODULE
• The module will provide the facility for a user to login to his/her account.
• Customer login using username and password.
• Successful login enables the user to enter the access verification page
which uses phone’s security feature for verification.
• Once successfully logged in, the user will directly enter to access
verification page.

20. LOCK MODULE
• The user can know the status of the lock (locked/unlocked).
• The security feature of the phone will be directly used for accessing the lock.
• If intruder is identified the image will be sent to all the users as an alert.
• Image of visitor will also be sent when switch is pressed.

21. TRACKING & MESSAGING MODULE
• The user can see the current location of all family members registered
using the specific Lock ID.
• A provision for broadcasting message to the members are also included
in this module.

22. HISTORY
• The accessing details of user can be viewed here.
• History contains the information about the user and his activity.
• It also comprises of images of intruders and visitors (if any).
• The history can be wiped by admin .

23. IMPLEMENTATION
Operating System Raspbian, Android
Coding Language Python, PHP
IDE Android Studio
Database My SQL

24. ARCHITECTURE

25. DFD LEVEL 0

26. DFD LEVEL 1

27. SCREENSHOTS

32. APP PREVIEW

33. Admin Registration
[First User]

34. User Registration
[Adding Users]

35. App Overview

36. CONCLUSION
Our system identifies threat and notifies the user thus enhances the
security features.
It not only helps in accessing the door but also provides a tracking
facility for members including message broadcast facility.
Over than these features it automatically opens the door when the
authenticated devices come near the door using bluetooth and
ultrasonic sensor.

37. Thank you all....