TY - BOOK AU - Batucan, Jake C. AU - Cena, Carl Louise P. AU - Jabili, Dean Yankee R. TI - Quadlock: 4-security digital door lock PY - 2023/// CY - Cebu City, Philippines PB - University of Cebu-Banilad KW - Electronic locks KW - Smart locks N1 - Includes bibliographical references and appendices; Contents: I The problem and its scope -- II Review of related literatures and study -- III Testing and refinement of the device -- IV Conclusion and recommendations; Adult N2 - Quadlock - 4 Security Digital Door Lock was made for the purpose of providing security and safety for homes. The researchers used Arduino Mega, a fingerprint scanner, a QR scanner, and an ESP32 camera. These were encased in a 3D-printed casing in which the researchers designed in detail. In developing the project, software was used, namely Android Studio - for software application, and Arduino IDE, Google Firebase - for the database. The project comes with an Android application. The users can use the software application to view the status of the digital door lock, provide a random QR, live video feed, access Bluetooth mode, register a fingerprint, and view their credentials. ER -