Almost Ended Up Looking Ugly — A Look at the Making of Toss Front 2
하마터면 못생겨질 뻔했다 - 토스 프론트 2 제작기
HCI Today summarized the key points
- •This article explains how Toss Place redesigned the front of its offline payment terminal (Front 2) to make it easier to use and nicer to look at.
- •In the first generation, the NFC was on the right, making it inconvenient to use on a narrow counter, so the team tested multiple designs to enable a front-facing layout.
- •By using a plastic rear instead of metal and a reinforced glass structure, they solved both front NFC recognition and a rigid, secure mounting.
- •They created a USB-C docking structure so the broken card reader could be replaced easily, and redesigned the internal layout to make swapping simpler.
- •With Front 2, the team improved the payment flow, repair convenience, and design together—achieving a smaller size and better responsiveness.
This summary was generated by an AI editor based on HCI expert perspectives.
Why Read This from an HCI Perspective
This article frames a payment terminal not just as hardware, but as an interaction problem—how people actually touch, look, and experience failures in the real world. In particular, it keeps asking whether things are truly ‘easy to use on-site,’ not merely whether they are ‘technically possible,’ examining details like NFC placement, the replacement mechanism, and preventing malfunctions. That makes it a valuable reference for HCI and UX practitioners. It also clearly shows how product design finds a balance among usability, aesthetics, and operational maintainability.
CIT's Commentary
The core of this case isn’t about adding features—it’s about imagining inconvenient scenarios first and then redesigning the structure accordingly. Problems like NFC not being detected on a narrow counter, or having to physically replace the reader when it breaks, can’t be solved by thinking only about the user journey; they require considering the operational journey as well. What’s especially interesting is that the team didn’t just increase convenience—they intentionally constrained intervention paths to reduce malfunctions and visual confusion. In safety-critical systems, a good interface isn’t about having more buttons; it’s about a structure that clearly tells users what to do and when. This approach can carry over directly to LLM-based AI agents or kiosks, and it expands into research questions about designing from the start where users can intervene and what recovery paths exist when things fail.
Questions to Consider While Reading
- Q.I’m curious how discomfort for on-site users and operators was measured differently during the process of changing the NFC placement and the replacement structure.
- Q.For functions that require user intervention—like swapping the reader—what design principles were used to reduce malfunctions while still giving users a sense of control?
- Q.How can the problems discovered in this kind of hardware interaction design be applied to failure modes and recovery design for LLM-based AI agents?
This commentary was generated by an AI editor based on HCI expert perspectives.
Please refer to the original for accurate details.
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