Familiarity with terms used in privacy policies

Familiarity with technical terms
1: I've never seen this term / don't know what it is
2: I've seen it but know nothing about it
3: I know a little bit about this
4: I know a lot / quite a bit about this
Chart: The ConversationSource: Consumer Policy Research Centre, UNSW SydneyGet the dataEmbedDownload imageCreated with Datawrapper