Redpill was a mechanism in Windows 8 designed to activate disabled features for authorized users, inspired by the red pill from The Matrix movie. It utilized the licensing subsystem to shield under-development features from both internal employees and the public. Microsoft engineer Raymond Chen confirmed the origin of the Redpill codename. The mechanism aimed to restrict access to hidden features, which included enhancements like a new Start menu and a redesigned logon interface. Critics argue that this approach may have limited valuable feedback, contributing to the perception of Windows 8 as a misstep. In contrast, current Windows development trends favor transparency and collaboration.