synapse-product/docs/specification-NOTHAVE.rst

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Matrix Specification NOTHAVEs
=============================
This document contains sections of the main specification that have been
temporarily removed, because they specify intentions or aspirations that have
in no way yet been implemented. Rather than outright-deleting them, they have
been moved here so as to stand as an initial version for such time as they
become extant.
Presence
========
Idle Time
---------
As well as the basic ``presence`` field, the presence information can also show
a sense of an "idle timer". This should be maintained individually by the
user's clients, and the home server can take the highest reported time as that
to report. When a user is offline, the home server can still report when the
user was last seen online.
Device Type
-----------
Client devices that may limit the user experience somewhat (such as "mobile"
devices with limited ability to type on a real keyboard or read large amounts of
text) should report this to the home server, as this is also useful information
to report as "presence" if the user cannot be expected to provide a good typed
response to messages.