From: Hal <hfinney@shell.portal.com>
Date: Thu, 11 Apr 1996 06:26:41 +0800
To: pcw@access.digex.net
Subject: Re: No matter where you go, there they are.
Message-ID: <199604101553.IAA20688@jobe.shell.portal.com>
MIME-Version: 1.0
Content-Type: text/plain


Peter - didn't they say that the checking station is also listening
to the satellites?  That way they can tell that you are playing back
signals that you taped earlier because they won't match what the
satellites are broadcasting right now.

I think your idea would work if you wanted to pretend to be at a point
which was _farther_ from each of the satellites than where you actually
are.  Then you could delay all of the signals.  But the only way to
be farther would be to be deep underground.  You might be able to pretend
to be at the center of the earth, but that is not very useful.

Actually I suppose this only applies to those satellites which are shared
between you and the checkin station.  If you are far away then maybe you
only share one or two.  If you know which ones those are, you can lie to
your heart's content about other ones, and for the shared ones you can
again delay the signal and claim to be farther than you are.

If their authenticated repeaters are used then you have to assume the
checking station has all the satellite signals and again the best you can
do is pretend to be a Mole Man.

Hal