ANDROID PHONE KEY

By

Author

Presented To

Department of Electrical/Electronic Engineering

ABSTRACT
The advancement of technology for the past decade has definitely triggered the need 
for developing more advanced devices. The traditional door lock system which 
comprises of a physical key and lock is slowly fading away. Although it is still 
considered efficient, a major key issue does occur which is the hassle of carrying a 
set of keys around for each lock to be unlocked. In addition to that, the distribution of 
keys in larger organisations could be costly. Thus, by developing a keyless system 
whereby only mobile phones are needed to unlock our doors, it would definitely 
reduce the cost tremendously and also increase flexibility in addition to providing 
ease of unlocking doors. In this modern society, majority of people in developed 
countries owns a smart phone as it has become an integral necessity which simplifies
our lives. Without a doubt, utilising this important device in developing a keyless 
door locking system would provide an abundance of benefits because there is 
absolutely no need for carrying any extra objects but only to make use of existing 
devices which are our mobile phones.
TABLE OF CONTENTS
DECLARATION ii
APPROVAL FOR SUBMISSION iii
ACKNOWLEDGEMENTS vi
ABSTRACT vii
TABLE OF CONTENTS viii
LIST OF FIGURES x
LIST OF SYMBOLS / ABBREVIATIONS xii
LIST OF APPENDICES xiii
CHAPTER
1 INTRODUCTION 1
1.1 Background 1
1.2 Aims and Objectives 2
2 LITERATURE REVIEW 3
2.1 Android-based Smart Locking System 3
3 METHODOLOGY 6
3.1 Software Implementation 6
3.2 Hardware Implementation 8
3.3 Process Flow 9
4 RESULTS AND DISCUSSION 12
4.1 Detailed flowchart of operation 12
4.2 Android phone key application 13
4.3 Interfacing Android application with PC 19
4.4 Serial Port Interfacing between PC and Door Lock Circuit 20
4.5 Electro-magnetic lock circuit working principle 21
4.5.1 Single Pole Double Throw Relay Working Principle 23
4.5.2 NPN Transistor working principle 24
4.6 Password hashing 26
4.7 Access Logs 27
5 CONCLUSION AND RECOMMENDATIONS 29
REFERENCES 31
APPENDICES


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