Re-identification analysis of the YJMob100K anonymized trajectories shows that ad hoc sanitization leaves substantial spatio-temporal leakage, with small numbers of anchors or sensitive locations often sufficient for unique user identification.
Yjmob100k: City-scale and longitudinal dataset of anonymized human mobility trajectories
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How Tough Is Location Anonymization? Re-identifying 100K Real-User Trajectories in Japan
Re-identification analysis of the YJMob100K anonymized trajectories shows that ad hoc sanitization leaves substantial spatio-temporal leakage, with small numbers of anchors or sensitive locations often sufficient for unique user identification.