Multilevel Privacy Controlling Scheme to Protect Behavior Pattern in Smart IoT Environment

Table 3

Several levels for protecting privacy of users.

Privacy level	Type	Description
	Zone/region	In this level, user just shares that he is in university but does not allow to share where exactly he is (e.g., in which building and apartment).
	Building/office/room	In this level, user shares his room/office/building but does not share the exact time (e.g., in which office at what time he is/was).
	Time duration	In this level, either he shares approximate time (09.00 to 14.00) about his activity/location or accurate time, day, week, and month etc.
	Activity/action	This level includes the activity/action of the user (e.g., exercise, work, taking class, and watching TV).