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<p class="MsoNormal"><span class="DefaultFontHxMailStyle">This is a great summary Atul.<o:p></o:p></span></p>
<p class="MsoNormal"><span class="DefaultFontHxMailStyle"><o:p> </o:p></span></p>
<p class="MsoNormal"><span class="DefaultFontHxMailStyle">I have an action item to discuss multiple subjects vs single subject with multiple claims with Mike and report back on Tuesday.<o:p></o:p></span></p>
<p class="MsoNormal"><span class="DefaultFontHxMailStyle"><o:p> </o:p></span></p>
<p class="MsoNormal"><span class="DefaultFontHxMailStyle">tim<o:p></o:p></span></p>
<p class="MsoNormal"><span class="DefaultFontHxMailStyle"><o:p> </o:p></span></p>
<p><b><span style="font-family:"Arial",sans-serif;color:#0078D4"> Tim Cappalli </span></b><span style="font-family:"Arial",sans-serif;color:black">|</span><span style="font-family:"Arial",sans-serif;color:#0078D4"> </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black"><a href="https://www.twitter.com/timcappalli"><span style="font-family:"Calibri",sans-serif">@timcappalli</span></a><br>
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<p class="MsoNormal" style="border:none;padding:0in"><b>From: </b><a href="mailto:openid-specs-risc@lists.openid.net">Atul Tulshibagwale via Openid-specs-risc</a><br>
<b>Sent: </b>Tuesday, August 25, 2020 21:09<br>
<b>To: </b><a href="mailto:openid-specs-risc@lists.openid.net">Openid-specs-risc</a><br>
<b>Subject: </b>[Openid-specs-risc] Subject identifiers / categories call</p>
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<p class="MsoNormal"><span class="DefaultFontHxMailStyle"><o:p> </o:p></span></p>
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<p class="MsoNormal">Hi all,<o:p></o:p></p>
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<p class="MsoNormal">We had the call earlier today to discuss multiple subject identifiers and subject categories in subject identifiers. Annabelle wasn't able to attend. The following is a (incomplete) summary of the discussion:<o:p></o:p></p>
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We agreed that the subject processing can be greatly simplified if when we specify multiple subjects in a single event, we always interpret that to mean that the intended subject of the event is an "AND" of all subject identifiers.<o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1">
An interesting proposal from Praveen (Microsoft) was that we could have a different subject-type that had fields like "user" and "device". Upon discussion we figured out each one of these fields would require the same subject-identifier structure, so it won't
be any different from the multiple subject-identifiers proposal being considered right now. It'll be great if Praveen can share his example to this list anyway, for further discussion.<o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1">
We agreed that defining event-specific subject identifier combinations would not be good for implementers.<o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1">
subject-categories are required to disambiguate use-cases where a subject identified by a subject-type of say, phone-number or iss-sub need to be classified as either a device or a user.<o:p></o:p></li></ol>
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<p class="MsoNormal">I've added the notes to the <a href="https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdocs.google.com%2Fdocument%2Fd%2F1ZFwJJDwwSBNKX35VObClC1ctMbMMuHJtr5qY-7xsLW8%2Fedit%3Fusp%3Dsharing&data=02%7C01%7Ctim.cappalli%40microsoft.com%7Cfff1926f9af140313f3408d8495cbd41%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637340009966110532&sdata=KnVprkVVP5XbBUfD4HSa1%2FcsnCRn1Z27UBU51y5kERg%3D&reserved=0">
weekly sync doc</a>, but since I was actively participating in the discussion, the notes are (very) incomplete.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Atul<o:p></o:p></p>
<p class="MsoNormal"><span class="DefaultFontHxMailStyle"><o:p> </o:p></span></p>
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