GPT NANDYAL COMPONENTS USED: ARDUINO MEGA FINGERPRINT SENSOR 4*4 MATRIX KEYPAD 16*2 LCD DISPLAY BUZZER GSM MODULE EM18 RFID READER RFID CARDS Abstract: This project presents an advanced attendance management system using Arduino Mega along with key components such as a fingerprint sensor, 4x4 matrix keypad, 16x2 LCD display, buzzer, GSM module, EM18 RFID reader, and RFID cards. The system offers a robust and efficient method for tracking attendance using both fingerprint and RFID card authentication methods, along with real-time attendance alerts through GSM communication. The main components utilized in this system are: Arduino Mega: Serves as the central processing unit to manage data flow and control interactions between various modules. Fingerprint Sensor: Used for biometric authentication to verify the identity of individuals during attendance marking. 4x4 Matrix Keypad: Provides an alternative input method for users in case they do not have their RFID cards or need...