Become a fan of Slashdot on Facebook

 



Forgot your password?
typodupeerror

Slashdot videos: Now with more Slashdot!

  • View

  • Discuss

  • Share

We've improved Slashdot's video section; now you can view our video interviews, product close-ups and site visits with all the usual Slashdot options to comment, share, etc. No more walled garden! It's a work in progress -- we hope you'll check it out (Learn more about the recent updates).

×
Cellphones Technology

Smaller SIM Format Standardized 83

Posted by Soulskill
from the easier-to-lose dept.
New submitter mk1004 writes "ETSI members have approved a new, smaller SIM format. 'The fourth form factor (4FF) card will be 40% smaller than the current smallest SIM card design, at 12.3mm wide by 8.8mm high, and 0.67mm thick. It can be packaged and distributed in a way that is backwards compatible with existing SIM card designs. The new design will offer the same functionality as all current SIM cards.' Nokia is not happy about the decision, as they believe their version was superior, but they say they're prepared to license the patents essential to the standard."
This discussion has been archived. No new comments can be posted.

Smaller SIM Format Standardized

Comments Filter:
  • by Nkwe (604125) on Friday June 01, 2012 @05:06PM (#40186119)

    Is there any reason the SIM card would have to be physical?

    Yes. The SIM is a physical container that protects the computer and data inside it. Note that the SIM is actually a complete computer, not just a hunk of flash memory. When you access the SIM, the security sensitive stuff never actually leaves the SIM card. You don't have any actual access to the security sensitive stuff - the little computer inside the SIM accesses it on your behalf. If it were a software solution (virtual), you would have direct access (via a debugger or similar) to the security sensitive stuff (private keys). Since it is a very physically small hardware solution, you would have to physically disassemble it and hook up microscopic probes to the computer inside, which is very difficult.

"If truth is beauty, how come no one has their hair done in the library?" -- Lily Tomlin

Working...