1. INTRODUCTION The Smart Survey Implementation (SSI) project investigates how to establish an end-to-end methodology for conducting smart surveys in official statistics. Smart surveys combine surveys with smart elements from sensors, for example, the use of the smartphone camera for receipt scanning in a household budget survey. 2. METHODOLOGY In 2024, fieldwork experiments were conducted in Norway, Belgium, and Germany to test various options in how to design and field a smart survey as part of national household budget surveys and time use surveys. In this presentation, experiences and results from three large field tests are shown, concentrating on the effect of design features on recruitment and response rates to smart surveys. For example, the use of different platforms from which the data collection app could be accessed and the use of CATI interviewers was tested in Norway. In Belgium and Germany different recruitment protocols were tested, including the use of different invitation letters that focus on individual features of the survey and secondary modes. 3. RESULTS AND PRACTICAL APPLICATION We find that recruitment rates vary across countries, and that the differences between within-country experimental conditions are smaller. 4. MAIN FINDINGS The presentation will also focus on the more practical experiences of conducting a smart survey, including country-specific experiences in designing and organising the fieldwork for smart surveys.
