Comparison of Graphical Password Authentication Techniques

User Authentication is the most crucial aspect of cyber security. To prevent systems from various types of attacks, password protection to the system is usually provided. The most widely used authentication method using normal text passwords which contains a sequence of alphabets, numbers, and special characters). User mostly tends to choose text passwords which are easy for them to remember (eg. Their birthdate, phone number, etc)... However, even though the technique is user friendly, it is susceptible to many attacks. The other type of Authentication scheme is using Graphical Passwords. These passwords contain images which are easier for humans to remember than the long stream of characters in text passwords. The paper discusses various approaches of using graphical passwords .The basic algorithms of graphical passwords are being compared based on security and usability parameters.