Fusion: Practice and Applications FPA 2692-4048 2770-0070 10.54216/FPA https://www.americaspg.com/journals/show/719 2018 2018 Bharati Vidyapeeth's College of Engineering, INDIA Vanita Jain Bharati Vidyapeeth's College of Engineering, INDIA Rishab Bansal Bharati Vidyapeeth's College of Engineering, INDIA Mahima Swmai Bharati Vidyapeeth's College of Engineering, INDIA Achin Jain In this paper, the authors analyze RFID technology, different types of Tags, Readers, and various protocols associated with RFID. We read, write and dump the raw bytes from the MIFARE Classic Card using RC5220 and Arduino Mega. Delhi Metro Card uses MIFARE DESFire. MIFARE DESFire uses 3(DES) for encryption. In this paper, we also read the data structure of the Delhi Metro Card. Additionally, we also compare MIFARE Classic Card and MIFARE DESFire Card.   2021 2021 22 31 10.54216/FPA.040103 https://www.americaspg.com/articleinfo/3/show/719