Hi Corentin and Patrick,

I just want to double check the multi-pairing use case.

>> BlueZ 5 persistently pairs remote devices, which brings up a use case 
>> for multi-pairing :
>> UserA is paired and connected to deviceR. When userA is disconnected 
>> from deviceR, userA stays paired.
>> In such case, a new user (userB) logins to the system and he is 
>> automaticaly paired to deviceR without any authentication.
>> As userB is already paired with the remote deviceR, he can just 
>> connect to PBAP service from deviceR to retrieve the phonebook for example.

1. Is it a first acceptable phase for multi-pairing?
If so, NTB will try to implement and match it, so that NTB can be integrated to 
Tizen.org.

If yes, it is good that you can add the related requirement in 
https://wiki.tizen.org/wiki/Multi-user_Bluetooth?

2. If not, which scenario is the weaker requirement of multi-pairing?
So that we can check the current NTB status.

Just want to double make sure it. Thanks.

Best Regards
Zheng Wu

-----Original Message-----
From: [email protected] 
[mailto:[email protected]] 
Sent: Monday, September 22, 2014 11:25 PM
To: Ohly, Patrick
Cc: Zheng, Wu; Le Foll, Dominique; [email protected]
Subject: Re: [Dev] FW: Tizen 3 services: use case for multi user

Le 22/09/2014 17:03, Patrick Ohly a écrit :
> On Mon, 2014-09-22 at 16:48 +0200, 
> [email protected]
> wrote:
>> Btw let me re-write a multi-pairing use case I wrote at the very 
>> bottom of my previous mail...
>> That reply to
>>
>>>> And I think the reason why we want to support multi-paring is just 
>>>> to protect the personal date for PBAP, MAP and so on, which is our 
>>>> second request.
>>>> However, PBAP, MAP, FTP, OPP are all based on OBexd, and run at 
>>>> normal user privilege not root, and each has it's own default home 
>>>> directory bound with the user to share the data through Bluetooth.
>>>> So that means for above profiles, the multi-user are supported natively.
>>>> We just did not try and verify the scenario before, but I think it 
>>>> will not big issue here, we will have a try on it.
>> BlueZ 5 persistently pairs remote devices, which brings up a use case 
>> for multi-pairing :
>> UserA is paired and connected to deviceR. When userA is disconnected 
>> from deviceR, userA stays paired.
>> In such case, a new user (userB) logins to the system and he is 
>> automaticaly paired to deviceR without any authentication.
>> As userB is already paired with the remote deviceR, he can just 
>> connect to PBAP service from deviceR to retrieve the phonebook for example.
> Just to avoid confusion: this is exactly the behavior that we do *not* 
> want, right?
>
> Calling it a use case together with the desired multi-user use cases 
> is a bit misleading. It's more like an "abuse case" from Tizen's 
> security and privacy perspective ;-}
>
Yes, "abuse case" is more appropriate !
Sorry for the confusion.
Corentin




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