This innovation project of SP Key Lock System (using via Bluetooth and android phone) was created to provide security of locker owners. Besides, this project was also inspired to develop technology in this era. Where electronic gadgets become leading in the development of electronics. This project has an application built on a smartphone that is used to give instructions to lock and unlock the locker door. This project describes the smartphones control the unlocking system and the way to develop this system, simply install on the locker and configure it to communicate with the wireless network. By using Android, the application software will be created for smartphones to control the operation of unlocking the locker. The locker locking system also needs to design for more secure which is automatically locked when the magnetic switch closed to each other and this project developed is to help people to control their locker door.