• Parsha Sravanthi

Conventional password schemes are vulnerable to shoulder surfing attacks, where an adversary observes a user’s login process to steal credentials. To mitigate this, many graphical password schemes have been proposed. However, since users are generally more familiar with textual passwords than purely graphical ones, text-based graphical password schemes have gained attention. Unfortunately, existing text-based shoulder surfing-resistant schemes often lack either efficiency or sufficient security. In this project, we propose an improved text-based graphical password scheme that incorporates the use of colors to enhance both security and usability. The proposed scheme allows users to log in quickly and intuitively, while maintaining strong resistance to shoulder surfing and reducing the risk of accidental logins. We further analyze the security and usability of the system, demonstrating its robustness against observational attacks and its practicality for real-world use

Graphical Password Text-Based Authentication Shoulder Surfing Resistance Color-Coded Login Scheme Secure Authentication Usability Human-Computer Interaction

"Enhanced Authentication Security: A Color-Assisted Text-Based Graphical Password Scheme"", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.12, Issue 10, page no.c633-c645, October-2025, Available :http://www.jetir.org/papers/JETIR2510280.pdf

"Enhanced Authentication Security: A Color-Assisted Text-Based Graphical Password Scheme"", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.12, Issue 10, page no. ppc633-c645, October-2025, Available at : http://www.jetir.org/papers/JETIR2510280.pdf