Technical Comments

Comment on “Unique in the shopping mall: On the reidentifiability of credit card metadata”

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Science  18 Mar 2016:
Vol. 351, Issue 6279, pp. 1274
DOI: 10.1126/science.aad9295


De Montjoye et al. (Reports, 30 January 2015, p. 536) claimed that most individuals can be reidentified from a deidentified transaction database and that anonymization mechanisms are not effective against reidentification. We demonstrate that anonymization can be performed by techniques well established in the literature.

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