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Reading PIN number from SIM GM862

Tips and questions relating to the GPS modules from SFE

Reading PIN number from SIM GM862

By DannyDJ
-  Thu Jul 17, 2008 2:31 am #52016
Is it possible to read PIN number from SIM card in module or my next question is if it is possible to change the PIN number with module?

tnx
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By leon_heller
-  Thu Jul 17, 2008 3:16 am #52018
It doesn't seem to be mentioned in the Software User Guide. It's probably a good security feature that it can't be read/changed, in a lot of applications.

Leon

By DannyDJ
-  Thu Jul 17, 2008 5:18 am #52021
I found the command AT+CPWD for chanching password but it doesn't seem to work.

I'm asking because i would like to implement some kind security because in our project you can set up the module from SMS, but i would like to set up this that only user wich knows PIN number of the SIM can change the settings.

Any ideas?
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By leon_heller
-  Thu Jul 17, 2008 5:33 am #52022
You can ask the user for a PIN and check it. Details are in the Guide.

Leon

By DannyDJ
-  Thu Jul 17, 2008 6:25 am #52027
I have this to obtain PIN but how to check that the PIN is from the SIM card? Because you can't read what is the PIN of the SIM card.
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By leon_heller
-  Thu Jul 17, 2008 6:46 am #52030
You get the user to input the PIN, and check it with the appropriate AT command, as I said before.

Leon
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