Mobile Technologies, Applications and Software Design Energy Plus Mobile Application by Jaeho Chung, Dana Lee and Yoo Hayeon Energy Plus is a mobile application that simplifies fueling in Korea by reducing a twelve step process to four actions. The main feature, Quick Fuel, lets drivers start refueling and complete payment with a single barcode scan, without cash or physical cards. Preferred fuel type, payment method and loyalty details are registered once and reused at every visit. Real-time fuel prices and station navigation support the choice of station. After each transaction, a digital summary with payment details and rewards information is provided.