A protective film applied to the display of a smartphone, specifically designed to limit the viewing angle, thus safeguarding sensitive information from prying eyes. It restricts visibility to individuals directly in front of the screen, obscuring the content for those viewing from the sides.
The utilization of such a screen enhances data security and personal privacy in public spaces. This technology has evolved from basic screen protectors to sophisticated films incorporating advanced light polarization techniques. Its adoption reflects growing concerns about visual hacking and the need for discreet device usage.