The goal of research was to develop dynamic key which is implemented on Smartphone with Android operating system. The research method of this thesis is prototyping which evaluated using Questionnaire and Interview approach. The prototype is going to be implemented towards miniature door with additional custom hardware. Development of the dynamic key depends on Artificial Neural Network (ANN), encryption-decryption technique, custom hardware specification and Bluetooth Low Energy (BLE). Making the research required source data that is collected from the connection between encryption-decryption techniques structure and the custom hardware which is embedded on miniature door. Results of this thesis are an application that could open doors using Bluetooth, a unique dynamic key which is generated for a specific period of time, and an electronic door which is able to use BLE connection

artificial neural network (ANN), Bluetooth low energy (BLE), custom hardware, dynamic key, encryption-decryption, miniature door, prototyping

• Ir. Surya Sujarwo, S.T., S.Kom., M.M., IPM

• Novita Hanafiah, S.Kom.,M.Sc.