ByUs is a web service for recording fan verification and LIVE participation in a Fan Passport. Our current Elina program lets fans take a fan quiz, reserve an upcoming LIVE, check in with a code shared during the broadcast, and use entries earned through the program to enter a selected prize draw. A reservation or check-in does not automatically enter a prize draw. Fans choose a prize and submit their entries separately. Each program has its own participation and prize-collection conditions. Current prizes require collection in Seoul or delivery to an address in South Korea. ByUs works alongside the creator's existing Instagram LIVE, with Korean and English guides explaining the flow. We'd appreciate specific feedback on which fan activities people would want to keep in their Passport.