A Review Onschemes for User Authentication

Textual-based password evidence scheme tends to be more accessible to attacks such as shoulder surfing and hidden camera, eves dropping, dictionary attacks, socialengineering. To overcome the vulnerabilities of traditional methods, graphical password schemes have been developed as possible alternative solutions to text-based password schemes.Most of thegraphical schemes are accessible to shoulder surfing. To solve this problem, text can be combinedwith images to generate session passwords for evidence. Session passwords can be usedonly once and every time a new password is generated. In this paper, we introduce a new evidence techniques "authentic recall-based" andComplect recall-based techniques.