How could you best keep unauthorized persons from using your station at home?

Amateur radio operators have a regulatory responsibility to ensure their stations are not used by unauthorized or unlicensed individuals. The most effective method to prevent unauthorized operation is physically disabling the equipment when you are not present. Installing a key-operated on/off switch in the main power line ensures that the station cannot even be turned on without the physical key. This creates a foolproof physical barrier against curious children, visitors, or anyone else who might attempt to transmit. Other options, like warning signs, are merely suggestions that can easily be ignored. A key switch provides a practical and highly secure method of access control.