From June 9 to 20, 2014, an expert from the World Bank (WB) carried out a mission to Cameroon as part of the design of robust and efficient computer applications for data collection by the CAPI method “Computer Assisted Personal Interviews” for the Fourth Cameroonian Household Survey (ECAM 4). The expert had theoretical, conceptual and practical working sessions with the members of the technical team of the ECAM 4 of the INS with a view to improving the CAPI applications developed under CSPro for the survey.