1995-01-13 - Re: “safe” Internet access

Header Data

From: Thomas Grant Edwards <tedwards@src.umd.edu>
To: Andreas Elbert <Andreas.Elbert@gmd.de>
Message Hash: f665f409a189bafe56efcd4dbe4a4c2134893774aa3d3b05aa209e8310f19aad
Message ID: <Pine.SUN.3.91.950113121410.26796A-100000@ether.src.umd.edu>
Reply To: <ab3c0afd00021004a7bf@[141.12.61.146]>
UTC Datetime: 1995-01-13 17:17:11 UTC
Raw Date: Fri, 13 Jan 95 09:17:11 PST

Raw message

From: Thomas Grant Edwards <tedwards@src.umd.edu>
Date: Fri, 13 Jan 95 09:17:11 PST
To: Andreas Elbert <Andreas.Elbert@gmd.de>
Subject: Re: "safe" Internet access
In-Reply-To: <ab3c0afd00021004a7bf@[141.12.61.146]>
Message-ID: <Pine.SUN.3.91.950113121410.26796A-100000@ether.src.umd.edu>
MIME-Version: 1.0
Content-Type: text/plain


On Fri, 13 Jan 1995, Andreas Elbert wrote:

> sorry to correct you, but the 900 MHz licensefree radios, the cellular
> radios (analog and digital) and Modacom and Mobitex are all different
> animals.
> i don't want to go into details though, because it doesn't change your main
> point, the ability to localize one of these radios while transmitting.

However, if there are a large number of 900 MHz radio modems operating in 
a cryptographically secure spread-spectrum method, it may be very 
difficult to locate your particular transmitter...however the modem you 
are talking to will know your pseudonoise sequence, and a receiver that 
knows this will have a much easier time tracking you down.

-Thomas






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