The IoT Doorlock provides IoT-based customized door-access services. Using biometric data, it recognizes and analyzes user patterns to provide diverse access, security and care services optimized for users. It supports both the password input method and fingerprint biometrics, and users can select between the dead-bolt method and the lever method. The lock can be remotely controlled in real time by linking to a mobile phone, and the status can be controlled from both inside and outside the house.