URN Namespace for the NFC Forum May 2006 Internet DraftNetwork Working Group M. AbelDocument: draft-abel-nfc-urn-00.txtRequest for Comments: 4729 NFC ForumExpires:Category: Informational November 2006May 2006A Uniform Resource Name (URN) Namespace forThethe Near Field Communication (NFC) Forum(NFC Forum)Status ofthisThis MemoInternet-Drafts are working documents ofThis memo provides information for the InternetEngineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet- Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time.community. Itis inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt The listdoes not specify an Internet standard ofInternet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. By submitting this Internet-Draft, each author represents thatanyapplicable patent or other IPR claimskind. Distribution ofwhich he or shethis memo isaware have been or will be disclosed, and any of which he or she becomes aware will be disclosed, in accordance with Section 6 of BCP 79.unlimited. Copyright Notice Copyright (C) The IETF Trust (2006). Abstract This document describes the Namespace Identifier (NID) for Uniform ResourceNamespaceName (URN) resources published by theNear-FieldNear Field CommunicationForum (NFC Forum).(NFC) Forum. The NFC Forum defines and manages resources that utilize this URN identification model. Management activities for these and other resource types are provided by the NFC Forum Technical Committee. Table of Contents 1.Introduction...................................................2Introduction ....................................................2 2. URNspecificationSpecification for "nfc"NID................................2 2.1 Namespace ID:..............................................3 2.2 Registration Information:..................................3 2.3 Declared registrant of the namespace:......................3 2.4 Declaration of syntactic structure:........................3 2.5 Relevant ancillary documentation:..........................3 2.6 Identifier uniqueness considerations:......................4 2.7 Identifier persistence considerations:.....................4 2.8 Process of identifier assignment:..........................4 2.9 Process for identifier resolution:.........................5 2.10 Rules for Lexical Equivalence:............................5 2.11 Conformance with URN Syntax:..............................5 2.12 Validation mechanism:.....................................5 2.13 Scope:....................................................5NID .................................2 3.Examples.......................................................5Examples ........................................................5 4. NamespaceConsiderations.......................................5Considerations ........................................5 5. CommunityConsiderations.......................................6Considerations ........................................5 6. SecurityConsiderations........................................6Considerations .........................................6 7. IANAConsiderations............................................6Considerations .............................................6 8.References.....................................................6 8.1 Normative References.......................................6 8.2InformativeReferences.....................................6 Acknowledgments...................................................7 Author's Addresses................................................7References ..........................................6 Acknowledgments ....................................................6 1. Introduction The NFC Forum is a specification development body developing technologies related to near-field communications. This activity is supported by a membership comprised of chip vendors, smart card vendors, equipment vendors, software developers, finance and banking service providers, contentprovidersproviders, and other interested companies. Some of the technologies being developed by the NFC Forum need namespaces that are managed so that they are unique and persistent. Toassureensure that the uniqueness is absolute, the registration of a specific NID for use by the NFC Forum was deemed appropriate. Therefore, a full and complete registration will follow the namespace specification process as defined in [RFC3406]. 2. URNspecificationSpecification for "nfc" NID2.1Namespace ID:The NID "nfc" is requested. 2.2nfc Registration Information: Registration version number: 1 Registration date: 2006-05-172.3Declared registrant of the namespace: Registering organization Name: Near Field Communication Forum, Inc. Address: 401 Edgewater Place, Suite 600 Wakefield,MA,MA 01880 Designated contact Role: Technical Program Manager Email: TPM@nfc-forum.org2.4Declaration of syntactic structure: The Namespace Specific String (NSS) of all URNs that use the "nfc" NID will have the following structure: urn:nfc:{NFCresource}:{ResourceSpecificString} Where the "{NFCresource}" is a US-ASCII string that conforms to the URN syntax requirements [RFC2141] and defines a specific class of resource. Each resource class has a specific labeling scheme that is covered by "{ResourceSpecificString}" which also conforms to the naming requirements of [RFC2141]. NFC Forum working groups will manage the assignment of NFC resources and the specific registration values assigned for each resource class. The Technical Committee will coordinate creation of new resource class assignments based on community need.2.5Relevant ancillary documentation: The NFC Forum publishes specifications describing the use ofnear- fieldnear-field communication for interoperable exchange of information between devices in close proximity. Among these specifications are the designation of new data types, schema, XML elements and attributes, protocols, and other formally named items intended for machine parsing. Interested parties are referred to the NFC Forum web site where these publications will be made available to the community: http://www.nfc-forum.org/2.6Identifier uniqueness considerations: The NFC Forum working groups and Technical Committee will ensure uniqueness of resource names assigned by the NFC Forum within the resource classes for which they are responsible. When authority and responsibility for assignment of names with a resource class are delegated to an external organization, commitment to adhere to the uniqueness requirements of the assigned resource names will be a pre-condition of such delegation. The structure of the NFC Forum namespace into resource classes will further ensure isolation of names in each class from names in other classes. It is anticipated that some resource classes may be open to self- assignment by any interested individual or organization. To ensure a degree of uniqueness for these self-assigned resource names,fully- qualifiedfully-qualified domain names will be factored into the name to distinguish the naming authorities. It should be understood that due to the flexibility of the domainnamesname system and the underlying market-based forces that allow for ownership transfer and abandonment of domain names, no guarantee of long-term uniqueness or persistence can be made for this class of resource names beyond that made for the domain names themselves.2.7Identifier persistence considerations: The NFC Forum will not reassign names and will thus guarantee the persistence of names beyond the expected lifetime of the named resource. NFC Forum does not anticipate operating a name resolution service for the assigned names and does not anticipate any other usability issues of the assigned names beyond those for any other naturally aging technology.2.8Process of identifier assignment: The NFC Forum will provide procedures for registration of each class of resource that it maintains. Each such resource may have three types of registration activities: 1) Registered names associated with NFC Forum specifications or services; 2) Registration of names or resource classes for other entities; 3) Name models for use in experimental purposes.2.9Process for identifier resolution: The namespace is not listed with anRDS;Resolution Discovery System (RDS); this is not relevant.2.10Rules for Lexical Equivalence: No specialconsiderations,considerations; the rules for lexical equivalence of [RFC2141] apply.2.11Conformance with URN Syntax: No special considerations.2.12Validation mechanism: None specified. URN assignment and registration will be handled by procedures implemented in support of NFC Forum activities.2.13Scope: Global 3. Examples The following examples are representative URNs that could be assigned by the NFC Forum. They may not be the actual strings that would be assigned: urn:nfc:wkt:Uri Defines the well-known type identifier used to identify URI bookmark data objects defined by the NFC Forum and exchanged by NFC devices. urn:nfc:schema:manifest Declares an XML namespace for elements and attributes, used in an XML schema to describe an NFC Forum data transfer manifest. 4. Namespace Considerations The NFC Forum is developing a variety of communication protocol and data exchange specifications. Some of these specifications depend upon supporting information(e.g.(e.g., data descriptions, attributes, schema, etc.) to be fully specified. For proper operation, descriptions of the needed supporting information must exist and be available in a unique,reliablereliable, and persistent manner. These dependencies provide the basis of need for namespaces, in one form or another. As type information is relayed across NFC Forum protocols, the need for compact,machine parsedmachine-parsed type identification of data and meta- content, with the attributes of uniqueness and reliability mentioned above, becomes imperative for proper interoperation across widely varied implementations. As the NFC Forum work is ongoing and covers many technical areas, the possibility of using various other namespace repositories has been deemed impractical. Each data object, description, or schema as defined in the NFCForum,Forum could possibly be related to multiple different othernamespacesnamespaces, so further conflicts of association might occur.ThusThus, the intent is to utilize the requested URN namespace to manage NFCForum definedForum-defined objects, descriptions, and schema. 5. Community Considerations The objects and descriptions required for specifications produced and published by the NFC Forum are generally available for use by other organizations. The NFC Forum will provide access and support for name requests by these external organizations. This support can be enabled in a timely and responsive fashion as new objects and descriptions are produced. 6. Security Considerations There are no additional security considerations other than those normally associated with the use and resolution of URNs in general. 7. IANA Considerations Theobjective of this registration is for therequested NIDto be(nfc) has been entered into the IANA registry for URN NIDs.This would result in an update to http://www.iana.org/assignments/urn-namespaces and any associated mirrors.8.References 8.1 Normative References As this registration request is an informative document, there are no normative references. 8.2Informative References [RFC2141] Moats, R., "URN Syntax", RFC 2141, May 1997. [RFC3406] Daigle, L., van Gulik, D., Iannella,R.R., and P. Faltstrom, "Uniform Resource Names (URN) Namespace Definition Mechanisms", BCP 66, RFC 3406, October 2002. Acknowledgments The author wishes to express thanks to Dwight Smith (Motorola) for his guidance on theurnURN registration process and for providing, by example, a registration that was worthy of emulation. Author'sAddressesAddress Miller AbelRole:Technical Committee Delegate, NFC ForumAddress:Microsoft Corporation One Microsoft Way Redmond, WA 98052Email:EMail: TPM@nfc-forum.org Full Copyright Statement Copyright (C) TheInternet SocietyIETF Trust (2006). This document is subject to the rights, licenses and restrictions contained in BCP 78, and except as set forth therein, the authors retain all their rights. This document and the information contained herein are provided on an "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS OR IS SPONSORED BY (IF ANY), THE INTERNETSOCIETYSOCIETY, THE IETF TRUST, AND THE INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. 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