From Idea to Reality: Behind Flip Slip, 3-Finger Capture, and the Pinch-to-Zoom PoC #MAKEbyKBank
Article Summary
Weera Youngnam from KBTG turned a personal pain point into a feature that caught executive attention. His journey from gyroscope experiments to production reveals how small PoCs can create outsized impact.
A mobile developer at KBank's tech division shares the creative process behind three innovative features in the MAKE by KBank app: Flip Slip (a merchant-facing payment slip), 3-Finger Capture (screenshot workaround for FLAG_SECURE), and a Pinch-to-Zoom PoC. The article emphasizes rapid prototyping, borrowing proven patterns, and connecting disparate ideas.
Key Takeaways
- Flip Slip solves merchant photo capture with gyroscope-triggered screen rotation
- 3-finger capture gesture borrowed from Chinese Android brands bypasses FLAG_SECURE blocking
- Pinch-to-zoom PoC reimagined as navigation shortcut, not just image scaling
- AI assistance reduced PoC development from days to hours at 70-80% completion
Small experimental features built from personal frustrations can gain executive visibility and inspire team-wide innovation when developers trust the process.
About This Article
MAKE by KBank's compliance policy blocked all screen captures. This prevented engineers from investigating production issues and stopped content creators from sharing how the app worked with their audiences.
Weera Youngnam's team looked at how different phone brands handled screen captures. They found that Chinese Android manufacturers used a three-finger gesture for this. The team adapted that approach and replaced the blocking with a data-blurring method using a wrapper class applied point-by-point.
The feature cut down implementation risk and the time spent on trial-and-error. It worked because the gesture pattern was already proven across millions of mainstream users. AI assistance also helped compress what normally takes several days of PoC development into just hours, reaching 70-80% completion quality.