Hardware Design of Transaction Device based on Contact and Contactless Smart Card

In this paper, we design and implement the transaction device based on two operation methods, i.e., with contact and without contact with smart cards. The system can be divided into three parts: hardware (transaction device), software (transaction application), and server. In this work, we focus on the hardware design that comprises smart card reader hardware, LCD display - touch panel, and battery charger circuit. ATMEGA 328P was chosen as a data exchange controller between the smart card and smart card reader. In contrast, the Raspberry Pi 3 Model B (single-board computer) was utilized as an application processor due to several features offered, such as I/O, graph processing unit, and enough memory. Our electronic transaction device can be connected to the thermal printer. Therefore, the transactions report (e.g., Top-up, balance check, payment activity, and so on) can be printed out. The developed device has a tiny dimension and lightweight to carry, hence it can be categorized as a portable device (easily moved everywhere).