https://javacard.vetilles.com/2010/02/06/a-new-use-for-the-micro-sim/ A weblog on Java Card, security, and other things personal Thu, 18 May 2017 07:26:32 +0000 hourly 1 https://wordpress.org/?v=4.0.32 https://javacard.vetilles.com/2010/02/06/a-new-use-for-the-micro-sim/#comment-4178 Wed, 05 May 2010 20:07:27 +0000 http://javacard.vetilles.com/?p=536#comment-4178 That’s done : the method to produce a micro-sim from a sim is at http://www.johnbenson.net/How_to_Convert_a_SIM_to_a_MicroSIM_with_a_Meat_Cleaver/How_to_Convert_a_SIM_to_a_MicroSIM_with_a_Meat_Cleaver.html

]]> https://javacard.vetilles.com/2010/02/06/a-new-use-for-the-micro-sim/#comment-4105 Thu, 11 Feb 2010 06:50:07 +0000 http://javacard.vetilles.com/?p=536#comment-4105 @lexdabear: Sorry, Wikipedia is way off. A Micro-SIM is just a smaller form factor. I guess that the spec may mandate slightly updated basic features, but all the features quoted on this page have been described in the 3GPP specs for ages. From the look of this page I think that the writer confused “Micro-SIM” (a form factor) for “USIM” (the application running in the card).

]]> https://javacard.vetilles.com/2010/02/06/a-new-use-for-the-micro-sim/#comment-4104 Wed, 10 Feb 2010 11:51:30 +0000 http://javacard.vetilles.com/?p=536#comment-4104 Whilst Wired speculates that it would be good for the network operators, selling two SIMs, I think it is more about the functionality. As described on Wiki (http://en.wikipedia.org/wiki/Micro-SIM), there are multiple security enhancements of the Micro-SIM OS. The latest public GSM hacks (http://www.nytimes.com/2009/12/29/technology/29hack.html) would underline the security concern Apple has. So my speculation is that the Micro-SIM provides the security it requires to protect the content transport on the iPad.

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