Hello all,

I'm thinking about the design for several applications that may access
one or more GSM-Modems.
I've tested authorization with AT+CPIN and similar commands. Works
fine.

My idea is, that every application accessing the Modem needs to
authorize with GSM PIN before using the phone. Some applications might
know the PIN, while others will need to ask the user to enter it
(which will be an important difference).

The problem is, that after an application has finished using the phone
it will need to revoke the PIN authorization to force other
applications to re-authorize access.
As of today, I haven't found any standardized command to revoke an
effective PIN authorization. No other way but to reset the modem
manually (e.g. power off or a reset-button if available).

Any ideas?

Thanks in advance,
regards,
Pelle.