To design a subway kiosk that allows people to refill their transit cards, several factors need to be considered. First, the kiosk should be easy to use and intuitive. Users should be able to easily understand how to refill their cards without requiring assistance or extensive instructions. This can be achieved through clear labeling, simple instructions, and user-friendly interfaces. Second, the kiosk should be accessible to all users, including those with disabilities. This means providing options for users with visual impairments or mobility restrictions, such as audio instructions or wheelchair-friendly interfaces. Third, the kiosk should be designed to handle a high volume of users and transactions, particularly during peak hours. This means ensuring that the kiosk has a fast and reliable connection to the transit system's servers and can process transactions quickly and efficiently. Fourth, the kiosk should be designed with security in mind. This means implementing measures to prevent fraud and protect users' personal and financial information. Finally, the kiosk should be designed to accommodate future updates and improvements. This means using modular components and scalable architecture that can be easily upgraded or expanded as needed. By considering these factors and designing a kiosk that meets the needs of both users and the transit system, we can create a convenient and efficient way for people to refill their transit cards and improve the overall rider experience.