CADAS Platform users can run and complete questionnaires created with the standard CADAS questionnaire editor using mobile devices in offline mode. Using the Java Mobile MIDP 2.0 technology, interview data can be collected on any device with Java Mobile (Java-enabled telephones, palmtops, smartphones). Java-enabled handsets are becoming increasingly available, which provides a better choice of devices.

Our solution enables transferring questionnaires to mobile devices in a single file created in the common graphical questionnaire editing environment of the CADAS QET application, where CAWI, CAPI and CATI questionnaires are created for implementation on the CADAS Platform. Common tools and compatibility with CAWI and CAPI surveys greatly simplify the management of the project at all its stages. CADAS Mobi users can use a wide range of features of the standard research project management tool for the CADAS Platform, the CADAS SCU (System Configuration Utility) client application.

Interview results are stored on a memory card and can be uploaded to the server individually as required, sent directly after the interview is completed, or synchronized automatically later. The direct synchronization of interviews allows ongoing monitoring of the sample inflow and interviewers' performance like with CAPI interviews conducted with laptops.