3D PASSWORD

• It is a multifactor authentication scheme
• It presents a 3D virtual environment containing various virtual objects
• It is simply the combination and the sequence of user interactions that occur in the 3D virtual environment

Some basic Objects used in the Virtual Environment  :

1) A computer with which the user can type; 

2) A fingerprint reader that requires the user’s fingerprint; 

3) A biometrical recognition device; 

4) A paper or a white board that a user can write, sign, or draw on; 

5) An automated teller machine (ATM) that requests a token; 

6) A light that can be switched on/off; 

7) A television or radio where channels can be selected; 

8) A staple that can be punched; 

9) A car that can be driven; 

10) A book that can be moved from one place to another; 

11) Any graphical password scheme; 

12) Any real-life object; 

13) Any upcoming authentication scheme

Some aspects of 3D Virtual Environment Design : 

• Real-life similarity
• Object uniqueness and distinction
• Three-dimensional virtual environment size
• Number of objects and their types
• System importance

Advantages over Present password system :

• The attacker has to try all possible 3D passwords. This kind of attack is very difficult for the following reasons :
  -Time required to login
  -Cost of attacks
• Due to use of multiple schemes into one scheme password space is increased to great extend