Multi-Platform Decision — PD Toolkit
Participatory design toolkit for studying how people in their 20s decide on places across multiple apps
Overview
A browser-based participatory design (PD) study toolkit built for a User-Centered Design course study at KAIST. The study asks how people in their 20s discover and decide on places — restaurants, cafes — when the decision is fragmented across Naver Map, Instagram, and KakaoTalk. Rather than interviewing about that journey, the toolkit lets participants reconstruct and redesign it themselves.
The Three Activities
- Journey timeline — participants rebuild a recent real decision as a card timeline: which app, what they did there, why they switched, with inline memos
- Design canvas — they compose their ideal decision experience from component cards (search, reviews, group chat, map) plus custom components and emotion tags
- Compare & discuss — they review the real timeline against the ideal canvas and record structured notes on the gaps
System Design
React + Vite single-page app with a guided bilingual (EN/KO) intro sequence, an admin view for the researcher to set topics and watch participants' artifacts live, Firebase Firestore for real-time multi-participant sync, and localStorage persistence so a refresh never loses participant work. Used to run in-person sessions of roughly 60 minutes as part of a four-study sequence in the course.