Project done as part of Pervasive Computing course

1. SMART CLASS

2. Abstract
Smart Class facilitates a simple and
interactive environment between the
teacher and the student
 Consists of:
 Attendance System
 Smart Notes System


3. Why Smart Class?
• Mark student
attendance easily and
flexibly
Tap/Tag/Type
• Get Smart Board
annotations on user
device in just a tap

4. App Functionality
Attendance
• Get students
details from ID
No.
• Mark Attendance
during lecture
• View Attendance
Statistics (Daily
and Monthly)
Smart Notes
• Get teacher’s
board
annotations
• Edit/Add to it
• One click save
• Offline Notes

5. Other features
List of Enrolled/Teaching Courses
 Change Password


6. Technologies Used
Presentation
Business
Database

7. Technologies Used

8. Tools Used
Eclipse IDE
WAMP Bundle
NXP Tag Writer

9. Resource Requirements
A Smartphone running Android 4.0.3
(API 15) Ice Cream Sandwich or
above
 NFC Support
 Apache Server
Wireless Connectivity(Wi-Fi)


10. Functional Modules

11. Server Side
Authentication and Authorization
 Attendance records display for course
instructors


12. Client Side Functionality

Attendance Module
 Android
application
 Web application

Smart Notes Module
Android
Application

13. Application Architecture

14. Attendance Module
NFC
Student
Tag
HTTP Post
JSON
NFC
Student’s
Device
Teacher’s
Device

15. Smart Notes Module
Teacher’s
Device
Student’s
Device

16. Data
Request for data
Teacher’s Device
(TCP Server)
Student’s Device
(TCP Client)
“On demand” data “Pull” from the Server

17. How Smart Class is Pervasive?

18. Pervasive Computing

19. Context Awareness

Time Awareness
 Respective Course home page
displayed if a course is scheduled
during that hour ( -5min and +5min
margin time)
 Phone put on silent mode (for both
teacher and student) if lecture
scheduled

20. Tagging
NFC Based Tags

21. Data Communication

22. Smart Notes
drawView.getBitmap()
BitMap to byte array
Byte array to BitMap
drawView.setBitmap()
TCP Byte Streams transfer data from server( Teacher’s device)
to the client (Student’s device)

23. Sending ID image from Db to Android
BLOB
Base_64
Encode
JSON
Network

24. Sending ID image from Db to Android
Network
JSON
Base_64
Decode
Byte
Array
Bitmap

25. Database
Schema
 User_Info(sid,sname,degree,pswd,status,ipaddr)
 Id_Pics(img_id,img_type,img,img_ht,img_wd,
img_ctgy,img_name)
 Course_Info(Course_No,Course_Name,Series,
Time,Instructor,Sharing,Port)
 Enrollment_Info(Course_No,sid)
 Attendance_Sheet(Course_No,Date,sid)

26. Password Encryption in Db
MD5 Encryption
 One way hash
 128-bit hash value
 expressed as 32 digit hex number
 Default Password “123” (change on first
login)
“202cb962ac59075b964b07152d234b70”


27. Limitations



Client(student) directly communicates
with the server(teacher) putting the
teacher’s device at risk of misuse/attacks
Auto-save option is not included for notes
User Schedule checked only at Log in

28. Possible Improvements



Notifications for events in student/teacher
schedule
Automatic Upload of lecture notes on
course portal
Functionality for student to write on
Teacher’s screen (Eg: To ask a doubt)

29. Demonstration