Privacy Concerns
Presence is highly sensitive information and in non-trivial systems a presentity may define limits to which its presence information may be revealed to different watchers. For example, a worker may only want colleagues to see detailed presence information during office hours. Basic versions of this idea are already common in instant messaging clients as a "Blocking" facility, where users can appear as unavailable to selected watchers.
Read more about this topic: Presence Information
Famous quotes containing the words privacy and/or concerns:
“The privacy of reading frees us to entertain the alien.”
—Mason Cooley (b. 1927)
“Much unhappiness comes from walking alone. When there are several, it’s somewhat different. I must get into the habit of listening to others, for what the others say concerns me, too.”
—Alfred Döblin (1878–1957)