The 3D password is a proposed multifactor authentication system that combines recognition, recall, tokens, and biometrics. Users authenticate by navigating a virtual 3D environment and interacting with virtual objects at specific locations in a defined sequence. This provides a very large password space that is difficult to crack through brute force attacks or by observing the user. The system has potential applications where strong authentication is needed, such as for critical systems, military facilities, and personal devices.

1. 3D-password
A more secured authentication
G.Suresh babu
Roll no:08H71A05C2
Computer science & engineering
Mic college of technology
Guide:Mrs A.Jaya Lakshmi

2. Contents
• What is Authentication
• Existing system
• Drawbacks in existing system
• Proposed system
• Advantages with proposed system
• Applications
• Attacks
• Conclusion

3. Authentication
Authentication is a process of validating who are
you to whom you claimed to be.
• Human authentication techniques are as follows:
1.Knowledge Base (What you know)
2.Token Based(what you have)
3.Biometrics(what you are)

4. Three Basic Identification Methods of password
Possession
(“something I have”)
Knowledge
•Keys
•Passport (“something I know”)
•Smart Card
•Password
•PIN
Biometrics
(“something I am”)
•Face
•Fingerprint
•Iris

5. Drawbacks
Textual Password:
– Textual Passwords should be easy to remember at the same time hard
to guess
– Full password space for 8 characters consisting of both numbers and
characters is 2 X 10¹⁴
– From an research 25% of the passwords out of 15,000 users can be
guessed correctly by using brute force dictionary
Graphical Password
 One main drawback of applying biometric is its intrusiveness upon
a users personnel characteristics.
 They require special scanning device to authenticate the user
which is not acceptable for remote and internet users.

6. 3d password
The 3D Password is a multifactor authentication scheme that combine
RECOGNITION
+ RECALL
+TOKENS
+BIOMETRIC
In one authentication system
 The 3D password presents a virtual environment containing various
virtual objects.
 The user walks through the environment and interacts with the
objects
 The 3d Password is simply the combination and sequence of user
interactions that occur in the 3D environment

7. 3D environment
Snapshot of a virtual environment , which contains 36
pictures and six computers as virtual objects

8. Virtual objects
• Virtual objects can be any object we encounter in real life:
 A computer on which the user can type
 A fingerprint reader that requires users fingerprint
 A paper or white board on which user can type
 A Automated teller(ATM) machine that requires a token
 A light that can be switched on/off
 A television or radio
 A car that can be driven
 A graphical password scheme

9. System implementation
• The action towards an object that exists in location (x1,y1,z1)
is different from action towards an another object at (x2,y2,z2).
• Therefore ,to perform the legitimate 3d password the user must
follow the same scenario performed by the legitimate user.
• This means interacting with the same objects that reside at exact
location and perform the exact actions in the proper sequence

10. example
 Let us consider a 3D virtual environment space of size G ×G × G.
The 3D environment space is represented by the coordinates (x, y, z) ∈
[1, . . . , G] ×[1, . . . , G] ×[1, . . . , G].
The objects are distributed in the 3D virtual environment with unique (x,
y, z) coordinates. We assume that the user can navigate into the 3D
virtual environment and interact with the objects using any input device
such as a mouse, key board, fingerprint scanner, iris scanner, stylus, card
reader, and microphone.

11.  For example, consider a user who navigates through the 3D virtual
environment that consists of an office and a meeting room. Let us assume that
the user is in the virtual office and the user turns around to the door located in
(10, 24, 91) and opens it. Then, the user closes the door. The user then finds a
computer to the left, which exists in the position (4, 34, 18), and the user types
“CAT.” The initial representation of user actions in the 3Dvirtual environment
can be recorded as follows::
*(10, 24, 91) Action = Open the office door;
*(10, 24, 91) Action = Close the office door;
*(4, 34, 18) Action = Typing, “C”;
*(4, 34, 18) Action = Typing, “A”;
*(4, 34, 18) Action = Typing, “T”;

12. Advantages
 Flexibility: 3D Passwords allows Multifactor
authentication biometric , textual passwords can be
embedded in 3D password technology.
 Strength: This scenario provides almost unlimited
passwords possibility.
 Ease to Memorize: can be remembered in the form
of short story.
 Respect of Privacy: Organizers can select
authentication schemes that respect users privacy.

13. Applications
The 3D password can have a password space that is very large
compared to other authentication schemes, so the 3D password’s main
application domains are protecting critical systems and resources.
 Critical Servers:
 Nuclear Reactors & military Facilities:
Airplanes and missile Guiding:

14. Applications
In addition,3D password can also be used in less critical systems
A small virtual environment can be used in the following systems like
Atm
Personal digital assistance
Desktop computers & laptops
Web authentication etc..,

15. Attacks and counter measures
 Brute Force Attack
 Well studied Attack
 Shoulder--surfing Attack

16. Conclusion
The authentication can be improved with 3d password ,because the
un- authorized person may not interact with same object at a particular
location as the legitimate user.
It is difficult to crack ,because it has no fixed no of steps and a
particular procedure
Added with biometrics and token verification this schema becomes
almost unbreakable