2.5.5 Geographic Location/Privacy (geopriv)

NOTE: This charter is a snapshot of the 71st IETF Meeting in Philadelphia, PA USA. It may now be out-of-date.
In addition to this official charter maintained by the IETF Secretariat, there is additional information about this working group on the Web at:

       Additional GEOPRIV Web Page

Last Modified: 2007-11-26


Robert Sparks <RjS@estacado.net>

Real-time Applications and Infrastructure Area Director(s):

Jon Peterson <jon.peterson@neustar.biz>
Cullen Jennings <fluffy@cisco.com>

* The Real-time Applications and Infrastructure Area Directors were seated during the IETF 65.

Real-time Applications and Infrastructure Area Advisor:

Cullen Jennings <fluffy@cisco.com>

Technical Advisor(s):

Lisa Dusseault <lisa@osafoundation.org>

Mailing Lists:

General Discussion: geopriv@ietf.org
To Subscribe: geopriv-request@ietf.org
In Body: subscribe
Archive: http://www.ietf.org/mail-archive/web/geopriv/index.html

Description of Working Group:

As more and more resources become available on the Internet, some
applications need to acquire geographic location information about
certain resources or entities. These applications include navigation,
emergency services, management of equipment in the field, and other
location-based services.

But while the formatting and transfer of such information is in some
sense a straightforward process, the implications of doing it,
especially in regards to privacy and security, are anything but.

The primary task of this working group will be to assess the the
authorization, integrity and privacy requirements that must be met in
order to transfer such information, or authorize the release or
representation of such information through an agent.

In addition, the working group will select an already standardized
format to recommend for use in representing location per se.  A key
task will be to enhance this format and protocol approaches using the
enhanced format, to ensure that the security and privacy methods are
available to diverse location-aware applications.  Approaches to be
considered will include (among others) data formats incorporating
fields directing the privacy handling of the location information and
possible methods of specifying variable precision of location.

Also to be considered will be:  authorization of requestors and
responders; authorization of proxies (for instance, the ability to
authorize a carrier to reveal what timezone one is in, but not what
city.  An approach to the taxonomy of requestors, as well as to the
resolution or precision of information given them, will be part of this

The combination of these elements should provide a service capable of
transferring geographic location information in a private and secure
fashion (including the option of denying transfer).

For reasons of both future interoperability and assurance of the
security and privacy goals, it is a goal of the working group to
deliver a specification that has broad applicablity and will become
mandatory to implement for IETF protocols that are location-aware.

Two further deliverables of the WG will be:

o An example API for application-level access to/management
  of link-based location information.  That is, for instance, the WG
  may describe an API for secure, privacy-enabling user/ application
  handling of location information specific to a 3G wireless link

o Development of i-ds that make security and privacy integral to
  location information in HTTP and HTML, based on the work in
  draft-daviel-html-geo-tag-05.txt and

Out of Scope:

This WG won't develop location-determining technology.  It will work
from existing technologies and where the technology is undeveloped,
will state that applicability may await others' developments.

This WG won't develop technology to support any particular regulatory
requirement [e.g. E.911] but will provide a framework that might be
used for private/secure definition of such technologies by other


The WG will coordinate with other WGs developing general privacy and
location-aware functions, e.g. the SIP WG, so that the WG deliverables
can be used by them.  Other coordination should include the NymIP
research community, WC3, and the Location Information Forum.

Goals and Milestones:

Done  Discuss initial geopriv scenarios and application requirements i-d's
Done  Discuss initial geographic location privacy and security requirements i-d.
Done  Initial i-d on geographic information protocol design, including privacy and security techniques.
Done  Review charter and initial i-ds with AD, and have IESG consider rechartering if necessary.
Done  Submit geopriv scenarios and application requirements to IESG for publicaiton as Informational RFCs
Done  Submit security/privacy requirements I-D to IESG for publication as Informational RFC.
Done  Submit PIDF-LO basic geopriv object draft as a PS
Done  Initial Common Rules base object draft
Done  Initial Common Ruels GEOPRIV object draft
Done  Submit DHCP Civil draft as a PS
Nov 2007  Resubmit Geolocation Policy to the IESG for publication as PS
Nov 2007  Resubmit Conveying Location Objects in RADIUS and Diameter to the IESG for publication as PS
Nov 2007  Submit Additional Civic PIDF-LO types (updating 4119) to the IESG for publication as PS
Dec 2007  Submit Layer 7 Location Conveyance Protocol Problem Statement and Requirements to the IESG for publication as Informational
Dec 2007  Submit a Document Format for Filtering and Reporting PIDF-LO Location Notifications to the IESG for publication as PS
Dec 2007  Submit Requirements for Location by Reference Protocols to the IESG for publication as Informational
Jan 2008  Submit PIDF-LO Usage Clarifications and Recommendations (updating 4119) to the IESG for publication as PS
Feb 2008  Submit minimal HTTP based protocol satisfying baseline requirements specified in the Layer 7 Location Conveyance Protocol Problem Statement and Requirements to the IESG for publication as PS
Feb 2008  Submit a LIS Discovery Mechanism to the IESG for publication as a PS


  • draft-ietf-geopriv-policy-14.txt
  • draft-ietf-geopriv-radius-lo-19.txt
  • draft-ietf-geopriv-pdif-lo-profile-11.txt
  • draft-ietf-geopriv-binary-lci-01.txt
  • draft-ietf-geopriv-l7-lcp-ps-06.txt
  • draft-ietf-geopriv-http-location-delivery-05.txt
  • draft-ietf-geopriv-lbyr-requirements-02.txt
  • draft-ietf-geopriv-lis-discovery-00.txt
  • draft-ietf-geopriv-dhcp-lbyr-uri-option-00.txt

    Request For Comments:

    RFC3693 I Geopriv requirements
    RFC3694 I Threat Analysis of the geopriv Protocol
    RFC3825 Standard Dynamic Host Configuration Protocol Option for Coordinate-based Location Configuration Information
    RFC4079 I A Presence Architecture for the Distribution of GEOPRIV Location Objects
    RFC4119 Standard A Presence-based GEOPRIV Location Object Format
    RFC4589 PS Location Types Registry
    RFC4676 PS Dynamic Host Configuration Protocol (DHCPv4 and DHCPv6) Option for Civic Addresses Configuration Information
    RFC4745 PS Common Policy: A Document Format for Expressing Privacy Preferences
    RFC4776 PS Dynamic Host Configuration Protocol (DHCPv4 and DHCPv6) Option for Civic Addresses Configuration Information
    RFC5139 PS Revised Civic Location Format for Presence Information Data Format Location Object (PIDF-LO)

    Meeting Minutes


    HTTP Location Delivery
    Using DHCP location in PIDF
    Security Requirements
    lbyr requirements
    DHCP LbyR
    Identity Extensions
    Context Management
    Civic Considerations