Moya is an online service for lan party ticket sales, shops, polls and competition management. In January 2015, a need for an Android app for event organizers arose and I created an interaction design for it. The purpose of the app is to scan tickets when visitors are entering the event. Visitors can be checked in by either scanning a barcode or a QR code from their tickets or then by manually searching a user from the event database. Organizers need to login to use the system. The app can be freely downloaded from the Google Play store but only users with correct access rights can use it.