Survey results often serve as a basis for decision-making in politics, business, and science. In times of increasing data protection scandals, it is becoming increasingly difficult to encourage the public to participate in surveys. To address this issue, access panels are increasingly being used in market and social research. However, these panels have not yet been sufficiently studied. Helen Vehre examines participation in a newly established offline-recruited access panel with regard to data protection concerns. Initially, the focus is on the willingness to participate in a first interview, and later on the readiness to be surveyed again. Innovative data sources are utilized in this process.