Edozie et al www.iaajournals.org 36 IAA Journal of Scientific Research 10(1):36-48, 2023. ISSN: 2736-7319 ©IAAJOURNALS Automated Hybrid Smart Door Control System Enerst Edozie 1 , Eze Val Hyginus Udoka 2 , Ibrahim Mohamed Jama 1 and Bwire Ivan 1 1 Department of Electrical Engineering, Kampala International University, Uganda. 2 Department of Publication and Extension, Kampala International University, Uganda. Corresponding Author: udoka.eze@kiu.ac.ug ABSTRACT This research paper successfully designed, developed and implemented an automated hybrid smart door control system which has the ability to secure a home up to 92% electronically. This smart door system is designed and implemented by building a hardware made up of the Bluetooth module and fingerprint scanner which are interfaced with the Microcontroller system that uses +5V power supply. The written programs were interfaced into the microcontroller chips by plugging the Arduino USB cable into the laptop and upload the codes. The microcontroller chips helped in enrolling the users fingerprint into the fingerprint scanner and it automatically administers and saves the users fingerprint after enrollment. Furthermore, after all the processes the user places the enrolled or registered finger into the fingerprint scanner which either accepts or denies the user by triggering the solenoid lock to either unlock, lock or deny access. This process of unlocking and locking requires using Bluetooth and fingerprint to either lock or unlock the door smartly without stress and it can be done within one second that is why the Solenoid lock is used in building this security system. This automated hybrid smart door control system developed has curbed the problem of door breaking theft for about 92%, strengthened security and as well made it so easy for the physically challenged people to have access to their homes without third party assistance. Keywords: Smart Door System, Fingerprint, Bluetooth, Security, Arduino, Microcontroller. INTRODUCTION Smart Home System (SHS) is a dwelling incorporating a communications network that connects the electrical appliances and services allowing them to be remotely controlled, monitored and accessed [1, 2, 3, 4, 5, 6, 7]. SHS includes different approaches to achieve multiple objectives range from enhancing comfort in daily life to enabling a more independent life for elderly and handicapped people [8, 9, 10, 11, 12, 13]. Security has become a very challenging concern in the twenty first century where everybody wants to feel safe at every point in time more especially at home, workplace and its environs at large [5, 14, 15, 16]. To feel safe and guarded to a certain extent at home there are many electronic and artificial intelligent gargets that were mainly designed to facilitate it [17, 18, 19, 20]. Those designed gargets such as metal dictator, automatic door alert and so on does not still provide sufficient security in this twenty first century. Due to this security threats and high rate of crime being recorded on daily bases at home, there calls for a need to improve home securities electronically. One of these artificial intelligent and electronic door securities systems used in Smart door security system are Bluetooth based smart door, image break based smart door, retina based smart door, remote control based smart door, finger print based smart door and Radio frequency identification (RFID) smart doors [21, 22, 23, 24]. The RFID and biometric systems of lock is an excellent method to make a door smart, due to its ability to use artificial intelligent and electronic mechanism to operate [25, 26, 27, 28]. The use of