Scheduling Worldwide by 4Service Holdings GmbH with its head office in Austria is constantly scheduling thousands of mystery shops in the 50 countries of Europe and Asia, on behalf of a number of international mystery shopping providers. Our ability to do this is based on 200.000+ shoppers, 29 languages spoken, operational staff of 200, world-class shopper management and quality control systems, state-of-the-art software employed, years of fieldwork experience and our fundamental dedication to operational quality.