Metrologic Optimus R, Programming Manual

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32 "C" Programming Guide For Optimus S/R
3.1.5 Security
To provide the System Menu with password protection so that unauthorized users cannot
gain access to it, you may either directly enable the password protection mechanism from
the System Menu, or through programming.
In addition, a number of security-related functions are available for using the same
password to protect your own application.
CheckPasswordActive
Purpose To check if the system password is enabled.
Syntax int CheckPasswordActive (void);
Example if (CheckPasswordActive())
printf ("Please input password:");
Description This routine detects whether the system password is enabled or not.
By default, the System Menu is not password-protected.
Return
If enabled, it returns 1.
Otherwise, it returns 0 (i.e. no password required).
See Also CheckSysPassword, InputPassword, SaveSysPassword
CheckSysPassword
Purpose
To check if the input string matches the system password.
Syntax int CheckSysPassword (const char *psw);
Example if (!CheckSysPassword (szInput))
printf ("Password incorrect!!!");
Description If the system password is enabled and you want to use the same password to
protect your application, then this routine can be used to check if the input
string matches the system password.
Return If matching, it returns 1.
Otherwise, it returns 0.
See Also
CheckPasswordActive, InputPassword, SaveSysPassword
InputPassword
Purpose To let the user input the password.