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@rysiek while I agree with you last point and mitigations, the first point irks me, as we arrived at a re-identifiaction rate of 80% in datasets based on cell tower locations and connected users already in 2008[1]. At that time this was comparably sparse data. Late work on less sparse data achieves even better results and that’s all before the current proliferation of GPUs. It’s never just location, sets of locations are intricately linked to identities. @0xfffffffe

[1] https://www.researchgate.net/profile/Yoni-Mulder/publication/221342258_Identification_via_location-profiling_in_GSM_networks/links/0912f50b75c74ea717000000/Identification-via-location-profiling-in-GSM-networks.pdf