Telstra gave ABS mobile data to track Canberrans' locations. Privacy advocates have slammed the study and how the ABS had dealt with the data. Chair of Digital Rights Watch Tim Norton said the study was "irresponsible" by the ABS in light of controversy over the 2016 census. "The ABS received aggregate level telecommunications data from a telecommunications company to inform estimates of temporary populations. No individual information was provided to the ABS. Only aggregated counts of mobile telephone transactions were supplied in broad geographical areas," the ABS spokesman said.

https://www.smh.com.au/politics/federal/telstra-gave-abs-mobile-data-to-track-canberrans-locations-20180424-p4zbf8.html