<scribe> scribenick: kaz
McCool: look fine
... "Jue" to be "June"
... "loca" to be "local"
... also new url for the f2f wiki to be used
... any objections to publish the minutes?
(none)
McCool: approved
<McCool> https://www.w3.org/WoT/IG/wiki/PoC_WebConf#2_June_2020
McCool: Smart City for today
... ACIOA talk tomorrow
... Chinn is moderating the session
McCool: next week will be
retail
... regarding the PoC call on June 16, would cancel if it's ok
by you all
Jennifer: fine
McCool: (put "cancelled due to
plugfest" to the agenda for June 16 call)
... the following week
... June 23
... cancelled due to virtual f2f
... but will be another meeting scheduled to discuss PoCs and use cases
... 30 June 2020
... cancelled due to post-f2f recovery
... so the next meeting will be July 7
... for Smart City
... any holiday information?
Jennifer: the next holiday will be in August in Singapore
McCool: ok
https://www.w3.org/WoT/IG/wiki/F2F_meeting_2020_2nd
McCool: note that we've renamed the
URL of the virtual f2f wiki to avoid confusion caused by the
new dates
... (put the URL on the June 23 call agenda))
McCool: next topic is f2f
planning
... will be talking about the PoC work during the T2TRG
workshop on June 8
... will add information to the virtual f2f wiki
... important thing is that we're still working on the concrete
agenda
Requests to speak for the T2TRG workshop
McCool: note that everything will be publicly published
Jennifer: all the use cases we've already provided are fine
McCool: (shows some slides on "Smart
City IoT Standards")
... smart city use case study: GovTech Singapore
... (including the picture from the BBC news the other day)
Jennifer: can provide some actual
picture for the slide
... a lot of people are concerned about privacy issues,
etc.
McCool: can email the slides to
you
... and you can think about the content as well
Jennifer: the current one looks good
McCool: any other comments?
... that was for the workshop part
... and then next is our own f2f
McCool: still working on the agenda
McCool: would move PoC topics to the
main agenda
... (adds PoC topics to the "Topics" section)
... PoCs
... * EdgeX, Conexxus
... * GovTech Singapore, Lin/McCool
Jennifer: still in the conceptual
phase, though
... what could be possible and expected, etc.
McCool: that's OK
... what is required/expected
... is the time OK?
Jennifer: will make myself available during the week
McCool: (put the topics to the
"Agenda" section)
... on Tuesday, June 23
Jennifer: ok
... will have a look and give comments by the end of Friday,
19
... think I can provide resources by Thursday
McCool: good
McCool: as already mentioned
... W3C would like to promote South Asia as well
... Chinn will moderate a workshop
... (shows his slides, Converging Standards fr Smart
Cities)
... based on the talk at the Munich workshop
... part 1 by Eric Siow, part 2 by myself
... (goes through the slides)
... What can W3C and ASEAN smart cities do?
... What can the W3C do?
... Calls to Action
... IoT data and metadata standards
... will send the PDF to Chinn
Jennifer: feel free to send it to me
too
... can review it
McCool: tx
McCool: (visits the wot-discovery repo)
<McCool> https://github.com/w3c/wot-discovery/blob/master/design.md
McCool: discovery design draft
above
... this is simply preliminary
... required to submit an explainer too
... capturing design decision and motivation
... will add them too
... there are different approaches
... note that it's still subject to change
... existing mechanisms here to boot up the discovery
... an introduction phase and an exploration phase
... some of the services need to get registered
Jennifer: guess my quick
understanding
... go through the URLs
McCool: simplest one is URL's
pointing where the TD is
... want to put TDs at some well-known location
... such as "/.well-known/wot-td"
... when we have type information, DNS-SD could return the
TD
... Sebastian, are you OK with sharing you ideas o
discovery
Sebstian: Christian is the person working on discovery
McCool: ok
... let me check with him then
... next, LinkSmart allows queries
... very powerfull
... but JSONPath is not yet a standard
... on the other hand, XPath is already a standard
... also what about SPARQL Query?
... very powerful but requires more powerful devices
... so for kind of advanced devices
... Standardized Directory Service
... would focus on TCP/HTTP
... let's consider TLS-based connection
... but possibly use HTTP for local usage
Jennifer: depends on the security mechanism required
McCool: yeah
... 2 issues there
... TLS connection and authentication
... what kind of security scheme to be handled is described in
another section
... (shows the "Authentication/Authorization" section)
... (also the "Directory Network API will be Described in a TD"
section)
... should think about the semantics
... TD for directory indicates security schemes
... currently listed:
[[
Basic authentication (basic scheme)
Digest authentication (digest scheme)
JWT Tokens (bearer scheme)
OAuth2 (similar to JWT tokens, but provides information about where to get the tokens)
]]
Farshid: LinkSmart uses OAuth2
McCool: the TD specifies which scheme
to be used
... but need to think about which flow, client, or device
... in any case, "none" should be disallowed except in
development environments
... what we have to do includes timestamp when got the latest
access
... add context, etc.
... pagination at result granularity would be a mandatory
feature for low-power devices
... (also mentions DID)
... (and QR codes)
Jennifer: QR codes would make
sense
... no management to certificate
... once expired, the user needs to login again
McCool: should boil down the
details
... we have to have some way to handle that (=possible Web page
to show QR code, etc.)
... same key could be used for multiple devices
Jennifer: should have some automated mechanism
McCool: let's capture some of the issues on GitHub
Kaz: we can think about the combination of the existing methods, e.g., QR codes as UI for DID
McCool: right
<McCool> https://github.com/w3c/wot-discovery/issues/26
McCool: if you have any comments,
please put them to the issue above
... the topic for the next week is "Retail"
[adjourned]