, scanner data do not cover services, rents, automobiles, restaurants, or cafes. In addition, this information may only be available for large retail chains but not for small independent stores or other types of outlets. 10.6 While scanner data sets present opportunities to improve the accuracy of the CPI, there are also challenges that need to be addressed before NSOs can use scanner data to compile the CPI. Obtaining Scanner Data Sets 10.7 Scanner data have existed for several decades and their value in the compilation of official statistics has become more