Patent ID: 6971015

Claim:
A method comprising: verifying that a first application is authorized to set an initial range for a controlled parameter setting; if authorized, allowing the first application to set an initial range for the controlled parameter setting; subsequently, allowing at least a second application to modify the controlled parameter setting within the initial range set by the first application; verifying that the second application is authorized to modify a current range for the controlled parameter setting; if authorized allowing the second application to modify the current range for the controlled parameter setting; and subsequently, allowing at least a third application to modify the controlled parameter setting within the current range as modified by the second application, wherein verifying that the first application is authorized to set the initial range for the controlled parameter setting further includes using a first verifier; and verifying that the second application is authorized to modify the current range for the controlled parameter setting further includes using a second verifier, wherein the first verifier and the second verifier are operatively configured in a serial arrangement, and the first verifier is independently responsive to a first security code and the second verifier is independently responsive to a second security code.