US 11,809,598 B2
Devices and methods for safe storage of media containing personal data and erasure of stored personal data
Daniel Falk, Lund (SE); and Ralph Berger Torres, Lund (SE)
Assigned to AXIS AB, Lund (SE)
Filed by Axis AB, Lund (SE)
Filed on Feb. 3, 2022, as Appl. No. 17/591,656.
Claims priority of application No. 21155892 (EP), filed on Feb. 9, 2021.
Prior Publication US 2022/0261499 A1, Aug. 18, 2022
Int. Cl. G06F 21/62 (2013.01)
CPC G06F 21/6254 (2013.01) 15 Claims
OG exemplary drawing
 
1. A method for storing a file containing personal data, the method comprising:
obtaining a temporary anonymous identifier of a person, wherein the temporary anonymous identifier is dependent on a token of the file;
extracting from the file personal data items associated with the person;
for each personal data item, generating a locator, which allows the personal data item to be reinstated into the file, and an item-specific anonymous identifier of the person, wherein the item-specific anonymous identifier is generated by applying a predefined one-way function to a combination of the temporary anonymous identifier and an identifier of the personal data item;
storing each personal data item together with the locator and the item-specific anonymous identifier in a first memory; and
storing an anonymized version of the file without the personal data items in a second memory.