How Learning to Code Helped Me Understand Smart Card Systems Like Nolcard-ae

As someone new to coding, I found it fascinating to explore how backend systems power things we use daily—like smart transport cards. While experimenting with API integration and data validation in my personal projects, I came across how cities implement transit solutions.
Dubai’s Nolcard-ae system is a great real-world example: it involves user authentication, balance checks, and tap-to-pay functions—all built on solid programming logic.
Has anyone here tried building small-scale projects like transit simulations or smart check-in systems? Would love to hear how others are learning through real-world tech examples!