The method of personal data usage in which the users must explicitly decide not to participate.
The term ''Opt-out'' refers to a consent model in which individuals are automatically included in a data processing activity or program unless they explicitly indicate their desire not to participate.
Under the DSCI Privacy Framework, ''Opt-out'' is contrasted with ''Opt-in,'' where explicit affirmative consent is required before processing.
Opt-out is often implemented through mechanisms like pre-checked boxes or default settings, which the user can change. This is particularly common in direct marketing scenarios or cookies for analytics. The DAF-P considers whether such consent mechanisms align with fairness and transparency principles.