You can prevent the debugger from reading the value of variables from the target. You might use
            this feature for variables that are either very sensitive or specified as volatile. This can also
            improve your program's performance. 
            
         
         
         
         
         To enable or disable a variable:
         
         
         
            - Open the Variables view.
 
            - Right-click the variable and select either
                  Enable or Disable. 
               You can disable all the
               variables in your launch configuration. See the Debugger tab section in the Launch Configurations
               Reference chapter.