The Tuya Smart Door Lock with fingerprint sensor combines a classic mechanical door handle design with modern electronic access control. Designed for residential use, the system offers multiple unlocking methods, including fingerprint recognition, PIN code via the integrated keypad, and the use of a mechanical key as an emergency option. This multi-factor authentication significantly increases flexibility in everyday use. The biometric recognition uses a capacitive sensor, enabling rapid identification within seconds. In practice, it demonstrates a solid recognition rate, even with slightly dirty or dry fingers, although extreme conditions may affect accuracy. PIN entry via the illuminated keypad is easy to use even in low light conditions and provides an additional layer of security against unauthorized access. The lock's housing appears robust and is designed for everyday use. The combination of the handle mechanism and electronic unit is functionally integrated without complicating operation. Installation requires basic DIY skills but is compatible with common door standards, making it suitable for many residential situations. Smart home integration via the Tuya platform enables app control, including user management, access logs, and temporary access codes. This makes the lock particularly suitable for households where multiple people or temporary guests require access. The electronic control system is responsive, but a reliable battery power supply is necessary, and the charge level should be checked regularly. Overall, the Tuya Smart Door Lock offers a balanced combination of convenience, security, and modern access technology. It is aimed at users seeking a flexible and smart access solution without completely foregoing mechanical backup options.