Phasing

Phase works with logging off. Your phase time is refreshed if you enter
a safe zone. Nobody can attack you, you cannot lose or gain health or
mana or vigor, and you can't use or drop any items while phased out.

For all intents and purposes, you are a logoff ghost. You will flat pen
accordingly when time runs out.

You will also see much more information using Phase rather than logging
off. In particular, your visual effects get stronger the closer you are
to penning.