Hi John, 
How do you want to protect users against unintentional unlocking? If there 
is no such protection an attacker could first unlock the device and then, 
with another tag, open some malicious website exploiting user's browser 
(without even the victim taking his phone out of the  pocket). 

Cheers! 
Lukasz

W dniu czwartek, 6 grudnia 2012 17:43:50 UTC+1 użytkownik John McLear 
napisał:to 
) 

I'm proposing a method of unlocking the device by using an NFC 
> transponder.  NFC is becoming more widely adopted on handsets and as 
> some NFC transponders have built in security features ergo "unlock 
> with NFC" seems to be an obvious next step. 
>
> When the Android community talks about "unlocking" a phone is the 
> assumption that this is the user stage of unlock IE what you do when 
> you take the phone out of your pocket each time you use it? 
>
> NFC fails to read quite frequently so the patch would need to include 
> code to do fallback onto a secondary unlock mechanism IE a pin.  My 
> work is partly in the area of improving read reliability so as we move 
> forward this will become less of an issue.  Is unlock fallback 
> something that has been considered or is due in a future version? 
>
> I basically need to make a decision between writing a decent app to or 
> submitting a patch and was hoping the community could advise. 
>
> Once we have fleshed out some of the security implications I will post 
> on android-contrib. 
>
> If it helps I can ask some NFC forum advisers to share their thoughts 
> on security on this thread but I feel I should get a general opinion 
> on new unlocking mechanisms from the Android Security community first. 
>
> Thanks 
>
>
>
>
>
> John McLear 
>
> Originally posted here: 
>
> https://groups.google.com/group/android-platform/browse_frm/thread/48876689f8814e41/49a8d8658b21fb3d?lnk=gst&q=nfc+unlock#49a8d8658b21fb3d
>  
>

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