This repo is CCIP(Community Checkin with Interactivity Project) Android client, OPass is the app name, you can download it from Google Play.
OPass is Taiwan's FLOSS conference check-in solution and provides newest event information for audience.
It has been used in SITCON (Students' Information Technology Conference) & COSCUP (Conference for Open Source Coders, Users and Promoters) for so many years. This app will help you check in rapidly and provide the newest information about the conference.
Patch welcome!