Electronic Door Lock using Light from Android’s Mobile Phone

Abstract

This paper introduces a development of an electronic door lock using light from the screen of Android’s mobile phone. A software to store binary information and control light intensity of the screen of mobile phone according to the information bits using PWM modulation. The receiver is developed to detect the optical signal and control magnetic door lock. Experiment results confirm that the device can be used to transmit the information bits and control the door efficiently. Therefore, the device can be used to control the door efficiently.