Re: [Ecrit] Hum: draft-schulzrinne-ecrit-location-hiding-req

["James M. Polk" <jmpolk at cisco.com>]

At 03:01 PM 5/30/2008, Liess, Laura wrote:

>James,
>
>The example was just one possible scenario, not the general case.

fair point

>If the UA has a location-by-value, GPS derived 
>or received from the AN, the UA can in principle 
>do everything with this location.
>
>The intention of the "location hiding" is, as 
>Barbara already pointed out, to obscure the 
>location, not to provide a false location.

I just can't help with the baggage of (way) 
earlier discussion in which false location was a 
goal.  I guess I'm over sensitive to that, as I 
(strongly) don't agree enabling that 
"feature".  I have always understood a user can 
lie, but in some scenarios we've defined, the 
user isn't completely involved in attaining the 
location that will be conveyed.

forgive my sensitivity on this matter.


>Laura
>
>
>
>-----Ursprüngliche Nachricht-----
>Von: James M. Polk [mailto:jmpolk at cisco.com]
>Gesendet: Donnerstag, 29. Mai 2008 20:30
>An: Liess, Laura; hannes.tschofenig at nsn.com; ecrit at ietf.org
>Betreff: Re: [Ecrit] Hum: draft-schulzrinne-ecrit-location-hiding-req
>
>At 09:30 AM 5/29/2008, Liess, Laura wrote:
> >Content-class: urn:content-classes:message
> >Content-Type: multipart/alternative;
> >         boundary="----_=_NextPart_001_01C8C198.9BFCB0AB"
> >
> >Here is my personal hum and the hum of my company in favour of the
> >"location hiding requirements" documenting effort.
> >
> >An additional comment:
> >James Polk also raised a very good point: users or end devices
> >providing false location. But, as Brian pointed out, "a user or a
> >device can always lie."  In my opinion, if we choose the right
> >solution(s), location hiding can improve this situation and minimize
> >the risk that users lie about the location (and make the PSAPs life easier).
> >I don't want to discuss location hiding solutions, just try to an
> >example where, in my opinion, the location information received by
> >the PSAPs is more reliable with location hiding than without
> >it.  Example: if an end device finds out the ESRP (LOST query) based
> >on a coarse location and sends in the INVITE to the ESRP instead of
> >the precise location a location URI, the ESRP gets the precise
> >location from the LIS based on the location URI. The ESRP then sends
> >the precise location directly to the PSAP.  Both the ESRP and the
> >LIS are local and trusted by the local PSAP.
>
>Laura - you are assuming location is always provided by-reference,
>and not by-value (as demonstrated in your example by the PSAP
>retrieving more precise location from the LIS through another
>transaction). What if the UA's location is GPS derived, or otherwise
>given to the UA by-value?
>
> >
> >Laura
> >
> >
> >
> >----------
> >Von: ecrit-bounces at ietf.org [mailto:ecrit-bounces at ietf.org] Im
> >Auftrag von hannes.tschofenig at nsn.com
> >Gesendet: Dienstag, 13. Mai 2008 09:10
> >An: ecrit at ietf.org
> >Betreff: [Ecrit] Hum: draft-schulzrinne-ecrit-location-hiding-req
> >
> >
> >Hi all,
> >
> >Henning gave a presentation about this draft at previous IETF
> >meetings. Although this is a controversal topic we believe it is
> >important to capture the problem statement and the requirements.
> >This document is NOT meant to capture solutions -- this is something
> >for future work. We would therefore like to confirm the hum on the
> >mailing list. If you have not stated your opinion or if you object
> >please let us know.
> >
> >Deadline for your response: 30 May 2008
> >
> >Ciao
> >Hannes & Marc
> >_______________________________________________
> >Ecrit mailing list
> >Ecrit at ietf.org
> >https://www.ietf.org/mailman/listinfo/ecrit

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