This document outlines a project aimed at developing a security system for illiterates using image-based passwords on touch screens. It includes sections on hardware components, advantages and disadvantages, and procedural steps for implementation. The conclusion emphasizes the security and memorability of image passwords compared to traditional text-based passwords.

1. Project Team:
Deepak Yadav (1001031031)
Deepak Kumar (1001031029)
Arvind Yadav (1001031022)
Deepankar Ram (1001031032)

2. Table of Content
 Introduction
 Hardware Description
 Advantages and disadvantages
 Procedural steps for compilation, simulation and
dumping
 Conclusion
 References

3. Introduction
 The main aim of this project is to provide a security system
for illiterates.
 Since the images are more easily to recalling in comparison
to string of character.
 The images are displayed on touch screen ,one can enter
correct sequences of images get authenticated.
 Gives exposure about how touch screen interface in our
practical life.
 It can be easily installed in industries ,houses ,poultry form
for security .

4. Block Diagram

5. Hardware Description
The major building blocks of this project are:
 Regulated power supply with voltage regulator
 Micro controller
 Touch screen sensor
 Stepper motor
 Buzzer

6. Power supply

7. Microcontroller (PIC16F72)
1.
2.
3.
a.
The microcontroller used in this
project is PIC16F72.
The PIC families of microcontrollers
are
developed
by
Microchip
Technology Inc.
PIC microcontrollers:
PIC12CXXX 12/14-bit program word .
b.
c.
d.
PIC 16C5X 12-bit program word .
PIC16CXXX and PIC16FXXX 14-bit
program word .
PIC17CXXX and PIC18CXXX 16-bit
program word.

8. Technologies of Touch Screen
There are a number of types of touch screen
technology.
1. Resistive
2. Surface acoustic wave
3. Capacitive
4. Surface capacitance
5. Projected capacitance
6. Infrared
7. Strain gauge
8. Optical imaging

9. Working of Resistive Touch screens
1. Polyester Film
2. Upper Resistive
3.
4.
5.
6.
7.
circuit Layer
Conductive ITO
(Transparent Metal
Coating).
Lower Resistive
Circuit Layer
Insulating Dots
Glass/AcrylicSubstrat
-e
Touch screen

10. Continue….
The contact can close
the switch an generated
Voltages.
Touch screen controller
convert it into (X,Y)
Co-ordinate system and
hence the position of
touch is sense by
controller easily.

11. Stepper motor
 It is gear based motor.
 The stepper motor are connected
with ULN2803 driver.
When the correct password
entered the lock attached to the
motor is open.

12. Buzzer
Basically it works as sound source
based on piezoelectric diaphragm.
It is consists of electrode ,when dc
voltage applied across electrode
produces sound.
To switch on buzzer -high 1
To switch off buzzer -low 1

13. Advantages
 Easily recalling.
 Image based password is more secure than text based
password.
 Less vulnerable.
 Easily installation method.

14. Disadvantages
 Since it is totally based on password hence shoulder
surfing can reduce the security of system.
 Taken more prevention for touch screen safety.

15. Procedural steps for compilation,
simulation and dumping
 PIC compiler is used for programming.
 After programming run the programs, it generated a
.hex extension file.
 The .hex extension file are dumping into
microcontroller using PIC kit programmer.

16. Conclusion
 Image password is easily remember than string of




character password.
Image password is more secure than text based
password.
Less vulnerable by attacker.
Know the exposure of touch screen interface in
practical life.
Shoulder surfing reduce the security of system.

17. References
http://www.wikipedia.com
http://www.google.com
http://www.slideshare.net

18. Thank you