This project is a fully functional IoT-based access control system built using an Arduino UNO R4 WiFi microcontroller. The system is designed to provide secure entry using two-factor authentication — first by scanning an RFID card and then entering a PIN code on a keypad. Only when both the card and the PIN are correct does the system activate an electric lock. I also designed the physical housing in Autodesk Inventor, so the system is not only electronically functional but also mechanically..