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RE: draft charter for a W3C NFC working group

From: SULLIVAN, BRYAN L <bs3131@att.com>
Date: Thu, 10 May 2012 14:22:43 +0000
To: Dave Raggett <dsr@w3.org>, Stephen Tiedemann <tiedemann@sony.de>
CC: "public-nfc@w3.org" <public-nfc@w3.org>
Message-ID: <59A39E87EA9F964A836299497B686C350FEB7BC9@WABOTH9MSGUSR8D.ITServices.sbc.com>
I believe LLCP support will be required for some of the use cases (especially the ones I submitted) at http://www.w3.org/2009/dap/wiki/Near_field_communications_%28NFC%29 

Bryan Sullivan 

-----Original Message-----
From: Dave Raggett [mailto:dsr@w3.org] 
Sent: Thursday, May 10, 2012 2:49 AM
To: Stephen Tiedemann
Cc: public-nfc@w3.org
Subject: Re: draft charter for a W3C NFC working group

Generally speaking it is preferable to keep working group charters
narrowly scoped as this helps when it comes to decisions about joining
working groups as well as with progressing specs along the standards track.

If there is a consensus that we need to address LLCP, we can easily add
it to the charter, but we need to understand the implications. The NFC
forum describes LLCP as:

> LLCP is a compact protocol, based on the industry standard IEEE
> 802.2, designed to support either small applications with limited
> data transport requirements, such as minor file transfers, or network
> protocols, such as OBEX and TCP/IP, which in turn provide a more
> robust service environment for applications. The NFC LLCP thus
> delivers a solid foundation for peer-to-peer applications, enhancing
> the basic functionality offered by ISO/IEC 18092, but without
> impacting the interoperability of legacy NFC applications or
> chipsets.

How would we want to expose this to Web applications? Some possibilities
include XHR, Web Sockets, and HTML5 Message Channels. Given that LLCP is
relatively new and not widely supported (correct me if I am wrong), it
may be something we should leave to a later date.

Best regards,

  Dave Raggett

On 09/05/12 20:11, Stephen Tiedemann wrote:
> Hi Dave,
> nice work and great to see that rolling in the browser community.
> I'm wondering though why the scope shall be limited to NDEF exchange,
> even in P2P mode. I would expect a lot of great ideas to blossom up when
> access to the LLCP interface becomes available, it's a much more
> flexible way of content exchange and allows interactive communication.
> Conceptually, an LLCP service interface matches pretty well with a
> socket model (done in https://launchpad.net/nfcpy project, for example).
> /Stephen
> On Tue 08 May 2012 11:22:06 AM CEST, Dave Raggett wrote:
>> See http://www.w3.org/2012/05/nfc-wg-charter.html

>> Your comments are welcomed!

Dave Raggett <dsr@w3.org> http://www.w3.org/People/Raggett

Received on Thursday, 10 May 2012 14:24:17 UTC

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