Sample members in respondent wave 9 households were invited to download an app and record their spending for one month. This study was fielded after the close of wave 9 fieldwork, in autumn 2016. The data from the receipt scanning study have been deposited with the UK Data Service (SN 8749, http://doi.org/10.5255/UKDA-SN-8749-1) and can be linked with the Innovation Panel data using the individual identifier “pidp”.



