To use Bluetooth or other Settings with only your voice is not very difficult. Here is a tip given by a hack.
All you have to do is to create a contact and then in the Web site field put the code for the system preference.
Example: Contact name is Bluetooth and the Web address is prefs:root=General&path=Bluetooth
After this, activate Siri and say “Bluetooth.” the contact Card will open a clickable link right to the Bluetooth settings.
See other common settings:
Airplane Mode: prefs:root=Airplane_Mode
With using the same procedure, you can create contacts to launch applications as well.
Hope you are not too lazy to turn the settings off manually… until hackers discover a way to turn them off with SIRI’s help.
Is not this useful for you? Enjoy with your phone and do not disturb your hands.