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List:       gnupg-users
Subject:    Re: Second OpenPGP-card
From:       Juergen BRUCKNER via Gnupg-users <gnupg-users () gnupg ! org>
Date:       2024-02-17 11:37:43
Message-ID: a6875cfc-ffb3-47f0-8c68-10f42cc6fa47 () bruckner ! email
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Hello Jacob,

Am 17.02.24 um 12:04 schrieb Jakob Bohm via Gnupg-users:
[...]
>> I don't know exactly how the situation about this is in Germany. But 
>> here in Austria many mobile phone shops have a SIM card punch with 
>> which you can punch out a micro-SIM or nano-SIM from a standard-SIM.
>>
> In some other countries, the mobile providers issues SIMs that are
> pre-punched to pop out either of the 3 small sim sizes from a full
> credit-card sized card where key information like the PUK code and
> serial number are printed.
> 
> More generally, there is no guarantee that hardware cards not sold
> through mobile phone carriers keep the actual chip/electronics within
> the nano-sim area near the middle of the contacts, most notably, NFC
> compatible cards will often have the NFC antenna outside that area,
> and it's a matter of luck if the contact card functionality works
> after cutting on any given hardware model.
> 

We are not talking about 'normal SIM cards' for use by mobile telephony 
but rather about the OpenPGP Smart Card V3.4 in SIM format [1]. This 
also doesn't have NFC functionality, so it can be punched fairly safely. 
You just have to do it right

best regards
Juergen

[1] 
https://www.floss-shop.de/de/security-privacy/smartcards/13/openpgp-smart-card-v3.4


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