This document summarizes a research paper that proposes a new graphical password authentication scheme called "Pass Matrix" that is resistant to shoulder surfing attacks. The scheme requires users to click on password images in a specific sequence rather than directly clicking on the images. It aims to improve security over text passwords and previous graphical schemes by generating a new random password sequence for each login session using a "login indicator". An implementation of Pass Matrix was tested on Android devices and preliminary user experiments showed it achieved better resistance to shoulder surfing while maintaining usability.