olemus
ühtse määratluseta, nõudena sõltub kontekstist;
isikuandmete puhul: üks privaatsuspõhimõtteid
= no uniform definition exist, as a requirement depends on the context; for personal data: one of the privacy principles

näiteid
https://www.hindawi.com/journals/tswj/2014/820391/

ISO/IEC TR 24714-1: 2008, 4.2.3:
The biometric system should be designed to permit a secure audit of the use of biometric data including its deletion or removal from the biometric system. See ISO/IEC 27002:2005.