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The Pattern Lock Screen app is designed to create and test secure pattern locks with customizable grid sizes. Users can set a pattern by connecting dots on a grid and later test their ability to unlock it by re-entering the same pattern. The app provides a user-friendly interface that allows for easy interaction and visual feedback. To use the app, users can select a grid size ranging from 3x3 to 6x6 and choose between two modes: "Set Pattern" and "Test Pattern." In "Set Pattern" mode, users draw a pattern by connecting at least four dots, which can then be saved for later use. In "Test Pattern" mode, users attempt to unlock the app by drawing the previously saved pattern. The app provides real-time feedback on the status of the pattern entered, indicating whether it is correct or incorrect. The app is built using TypeScript and React, leveraging the Next.js framework for server-side rendering and routing. It utilizes various components for UI elements, including buttons, sliders, and cards, and incorporates a theme toggle feature to switch between light and dark modes. The app also employs the Sonner library for toast notifications, providing users with immediate feedback on their actions. Key features of the Pattern Lock Screen app include: - Customizable grid sizes for setting patterns. - Two modes for user interaction: setting and testing patterns. - Visual feedback during pattern drawing, including hover and selection states for dots. - Toast notifications for user actions and status updates. - A theme toggle for light and dark mode support. Overall, the Pattern Lock Screen app offers a secure and engaging way for users to create and test their own pattern locks, enhancing both usability and security.