Nokia 12 GSM MODULE REMOTE I/O - Manual (Page 9)

3. SECURITY
There are different levels of access control for the Remote I/O control: message
identifier, password, and authorised numbers. Also the aliases defined for
commands increase security.
You must use a message identifier, which means that you must name the Nokia
12 GSM Module to be able to use the Remote I/O control. Each control
message begins with an identifier, which enables the Nokia 12 GSM Module
recognise it as a Remote I/O control message. Enter the identifier with the
Nokia 12 Configurator software when using the Nokia 12 GSM Module for the
first time (see chapter 4.5). Only users who know the correct message identifier
can control and monitor the device attached to the Nokia 12 GSM Module. The
message identifier is case sensitive.
You can use a password to further secure the communication between the
mobile phone and the Nokia 12 GSM Module. You must enter the password
when sending a control message to the Nokia 12 GSM Module. Set the
password with Configurator or with a control message (see chapter 5.2). Only
users who know the correct password can control and monitor the device
attached to the Nokia 12 GSM Module. The password is case sensitive.
You can also determine a closed user group of up to 16 authorised phone
numbers. The Nokia 12 GSM Module only accepts control messages from
these phone numbers. Specify the numbers with Configurator. The first number
on the authorised phone number list is in bold and it identifies the main user of
the Nokia 12 GSM Module. The main user is notified of any unauthorised
control attempts.
You can use user-defined commands (aliases) instead of the default
commands of the Nokia 12 GSM Module (see chapter 5.3). If an alias has been
defined, the default command can no longer be used and is not accepted as
part of a control message. While default commands are generally known, an
alias is only known by the one who defined it. Only users who know the correct
alias can control and monitor the device attached to the Nokia 12 GSM Module.
Note: The message identifier and password are case sensitive, whereas
commands and aliases are not.
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