■ Design Concept

–Static & Modern

The core concept is Static & Modern Interaction, designed so that anyone can quickly understand and use it in a public payment environment. The overall layout minimizes complex visual elements, focusing on a Static yet Stable UI Structure to reduce unnecessary confusion for users.

The background utilizes a Calm Gray Tone to reinforce the solidity and reliability characteristic of public devices, while the outer buttons, input fields, and emphasized elements feature a Highlight Accent (Fluorescent Lime Line) to provide sharp contrast. This design enables Rapid Recognition and Intuitive Operation, particularly in low-light situations such as parking lots or outdoor environments.