This paper presents Hollow-Pass, a developed solution that strengthens the security of pattern passwords against shoulder-surfing attacks. It is a novel approach to graphical password (GP) schemes that utilize a dual-view technology known as the global precedence effect, which eliminates the need for external devices and makes the grid and pattern invisible to potential shoulder surfers. The usability of Hollow-Pass was evaluated through an online as well as an offline user test. We recruited 30 participants from varied backgrounds, ranging in age from 20 to 80 years, for the online user test. An offline small-scale sampling test was conducted among 19 undergraduates from the Universiteit of Twente. The developed solution successfully demonstrated its ability to effectively resist shoulder-surfing attacks for simple patterns at various viewing angles (front, left-front, and right-front) and different distances (1.0 m, 1.5 m, and 2.0 m).