there is a one-to-one relationship. However, there are cases were there
isn't such a relationship and hence the privacy properties may be
different. Example: I was told that in various countries in Africa
mobile phones are shared among various persons. In Finland, for example,
this is rather uncommon.
If we use the term "device" for the physical entity and "target" for the
human using it then we should re-read some of our documents again to see
whether we use the new terms consistently.
Ciao
Hannes
>-----Original Message-----
>From: ext Alissa Cooper [mailto:acooper@cdt.org]
>Sent: 14 September, 2009 22:06
>To: GEOPRIV
>Cc: Martin Thomson; Tschofenig, Hannes (NSN - FI/Espoo)
>Subject: Re: [Geopriv] Device vs. Target Terminology
>
>I took a look back at how we use "Target" and "device" in
>geopriv- arch. In section 2.3 (immediately following the
>section where "Target"
>is defined), we say the following:
>The term "Target" may refer not only to an individual whose
>location is described by a LO, but also to that individual's
>device, since the device engages in protocol interactions, not
>the individual. For the remainder of this document, the term
>"Target" refers to the device.
>Geopriv can also be used to convey location information about
>a device that is not directly linked to a single individual,
>such as a package or product containing a location-capable
>sensor, or a device linked to multiple individuals.
>I think in some of the other documents we do the same thing
>that was done here, which is to pick one term that is
>generally accurate but may actually mean both target and
>device, or one or the other, in some contexts. The difference
>is that for geopriv-arch we chose Target, whereas for the
>other documents we chose Device. My proposal:
>
>1. Add the definition of Device from 3693 to section 2.2 of
>geopriv- arch.
>2. Move the paragraph above from section 2.3 to section 2.2.
>3. Switch the convention established in that paragraph, so
>that we use "Device" in the remainder of the document rather
>than "Target," unless the point being made explicitly deals
>with something related to the person who is the Target (e.g.,
>when we are discussing the person's privacy interest, such as
>in 3.1.2 where we talk about "the real identity of the Target.").
>
>I think that might clear up the confusion.
>
>Alissa
>
>
>On Sep 6, 2009, at 7:56 AM, Alissa Cooper wrote:
>
>> On Aug 23, 2009, at 8:26 PM, Thomson, Martin wrote:
>>> For this second reason, Target is the right term to use when
>>> discussing privacy. A Target is any entity that the location
>>> information _could_ refer to, and who might have a stake in
>ensuring
>>> that the information is protected.
>>>
>>
>> I'm fairly certain this is the reason why Target is used in geopriv-
>> arch -- because one of the primary motivations for writing the
>> document was to explain the privacy architecture at a high level.
>>
>>> The arch document should recognize the distinction between
>the two.
>>> We are building tools for Devices that aren't applicable in the
>>> general sense to Targets. However, we need the generic "Target"
>>> label.
>>
>> I will take a look through and see where it makes sense in the
>> document to use Device instead of Target.
>>
>> Alissa
>>
>>>
>>> --Martin
>>>
>>>> -----Original Message-----
>>>> From: geopriv-bounces@ietf.org
>[mailto:geopriv-bounces@ietf.org] On
>>>> Behalf Of Tschofenig, Hannes (NSN - FI/Espoo)
>>>> Sent: Saturday, 22 August 2009 4:13 AM
>>>> To: geopriv@ietf.org
>>>> Subject: [Geopriv] Device vs. Target Terminology
>>>>
>>>> Hi all,
>>>>
>>>> the 'device' vs 'target' terminology from
>>>> http://www.ietf.org/rfc/rfc3693.txt is confusing for me, see:
>>>>
>>>> Target:
>>>> The entity whose location is desired by the Location
>>>> Recipient.
>>>> In many cases the Target will be the human "user"
>of a Device
>>>> or an object such as a vehicle or shipping
>container to which
>>>> the Device is attached. In some instances the
>Target will be
>>>> the Device itself.
>>>>
>>>> Device:
>>>> The technical device whereby the location is tracked as a
>>>> proxy
>>>> for the location of a Target.
>>>>
>>>> In http://www.ietf.org/id/draft-ietf-geopriv-arch-00.txt we talk
>>>> about the Target but the device terminology is gone:
>>>>
>>>> Target: An individual or other entity whose location is
>sought in
>>>> the Geopriv architecture. The Target is the entity whose
>>>> privacy
>>>> Geopriv seeks to protect.
>>>>
>>>> [Btw, I only refer to entity instead of individual as in our
>>>> protocol mechanisms there are no 'humans' as such only
>identifiers.]
>>>>
>>>> The problem is that we use the term 'device' in our documents.
>>>> Examples:
>>>>
>http://tools.ietf.org/html/draft-ietf-geopriv-http-location-delivery
>>>> -15
>>>> http://tools.ietf.org/id/draft-winterbottom-geopriv-held-identity-
>>>> extens
>>>> ions-09.txt
>>>>
>http://tools.ietf.org/html/draft-ietf-sipcore-location-conveyance-01
>>>> (Actually, we sometimes use Target and sometimes Device.)
>>>>
>>>> The differentiation between Target and Device only makes sense if
>>>> there is a clear difference between the two.
>>>>
>>>> My question: Should we stick with the terminology used in
>>>> draft-ietf-geopriv-arch-00.txt and not use device anymore? This
>>>> would require us to run a find/replace action over a few of our
>>>> documents.
>>>>
>>>> Ciao
>>>> Hannes
>>>> _______________________________________________
>>>> Geopriv mailing list
>>>> Geopriv@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/geopriv
>>>
>>>
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>>
>>
>>
>>
>>
>>
>>
>>
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