[aprssig] APRS web messaging
steve at dimse.com
Fri Aug 11 08:15:44 CDT 2006
On Aug 10, 2006, at 10:22 PM, <scott at opentrac.org>
<scott at opentrac.org> wrote:
> If they have to generate an authentication message on RF, then at
> you've made them show that they're on the air and more likely a
> real ham.
Yes, if you can show that the message was really transmitted on RF.
However, you cannot rely on the APRS IS to determine this, as anyone
can place a packet on the stream that looks exactly like an IGated RF
packet. Even if the APRS IS were fully secured, all one would need do
is feed bogus serial data into a computer configured as an IGate.
This is the reason I did not release web->APRS messaging for use, the
programming is trivial (and already done), but any implementation
puts the licenses of all IGate operators at risk, I won't be a party
The only system I have conceived that would work is a system where a
trusted group of people manually clear each incoming message. As long
as a message contains no pecuniary or obscene content, it is OK to
transmit it regardless of who sends it. That way non-hams could send
messages, making it more useful to the ham-recipient.
So, the internet user enters a message, it gets stored in a database.
The moderators periodically check a password-protected web page,
normally empty but when a message is pending it appears there, the
moderator can approve it, in which case the internet user gets an
email saying it has been sent, the message is added to the internet
stream. You could even send a message to the originator when the APRS
message is ACKed. If it is rejected you could also send email
This would not be too difficult to implement, but it depends on
people checking the page constantly for messages for approval.
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