1 Confidential Internship Report @kubomi

2 Confidential Self-Introduction @kubomi ● Team Merpay iOS team (Intern 8/16 - 10/14) ● Background - Bachelor of Design - UI UX Designer - Studying CS at the University of Pennsylvania (2022-) ● Hobbies Drawing🎨, Cooking🍳, Cat😺

3 Confidential My Project Agenda Other Tasks Summary 02 03 01

4 Confidential My Project

5 Confidential Holographic Logo Project Project Goal: Generate Holographic Effect for RealCard Logo on iOS using Device Motion Sensors. Motivation: - Provide a consistent UX in both the physical and digital worlds Result RealCard

6 Confidential Challenge 2 : Energy Efficiency Getting motion data in real time requires high CPU usage What I did: - Measured the CPU usage - Found the best update frequency to balance between looking good & being efficient - Ensured that the CPU usage returns to normal when not used

7 Confidential Challenge 3 : Communication with Designers Understand the designers' intentions and quickly reflect them in the demo What I did: - Have the designers check the demo on an physical device - Quick prototyping and get feedback from the designer - As a result, we could develop efficiently and collaboratively

8 Confidential Holographic Logo Project What I Learned - Comprehensive App Development - Using Motion Sensor - Checking CPU usage What I Achieved - Developed a feasible Proof of Concept - Quick Prototyping - Efficient Communication with Project Members Result

9 Confidential Summary

10 Confidential ● Hands-on Experience in iOS App Development ○ Swift, Xcode, Problem solving, Documentations, Design System, PR Review ● Communication with project members ○ Getting help and code review from iOS team ○ Discussion with designers & PMs ○ Syncing with Android team ● Understanding Mercari Culture ○ Understand the Mercari mindset through 1on1s with various people 🙌 Special Thanks to @kris-san & Merpay iOS team Summary

11 Confidential Thank you 🙌