Hi

I also agree with that opinion. In my company we have highly complex SAMs
that can handle multiple *long* transactions (up to around one minute) and
it would be a problem if the card was powered down in the process.

Autopoweroff shall be an optional, non default activated feature.

btw I agree it's useful in some cases where power consumption is an issue.

Sebastien

PS: background threads in a *card* ... how awful x_x !

On Sun, Oct 24, 2010 at 3:19 PM, s.ferey <[email protected]> wrote:

> Hello Ludovic, All,
>
> I see at least 3 issues with auto power-off:
>
> - under Windows (may be also on Linux) the smardcard withdrawal can lock
> the station; a power off of the cad will result in unexpected log-out.
>
> - a SSO solution may/should rely on a backgroung process that controls all
> smartcard requests, but still one can design a solution based on an "short
> life time" application to gain card access (user verification, on-card
> context establishment) and then small clients for signature, data storage,
> etc, requests - such clients will expect the card to keep its context.
>
> - JavaCard 3.0 introduces "distributed services", such a card can have
> running background threads w/o applications actually connected - the card
> behaves as a server and thus must keep a context alive.
>
> Regards,
> Sylvain.
>
>
> Le 24/10/2010 11:56, Ludovic Rousseau a écrit :
>
>
>> Hello,
>>
>> I just implemented a new feature in pcsc-lite: card auto power on and off
>> I describe the mechanism in an article [1] on my blog.
>>
>> Play with the new code, break it and report bugs :-)
>>
>> Bye
>>
>> [1]
>> http://ludovicrousseau.blogspot.com/2010/10/card-auto-power-on-and-off.html
>>
>>
>
>
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