The activation stud, button, slide, switch, lever, or plate, was a component on the hilt of a lightsaber or lightwhip that was used to activate the weapon's energy blade. It was generally a prominent button, however Asajj Ventress had the activation switch on her lightsabers concealed. A trapped grip was another modification that was used to prevent unauthorized users from activating the lightsaber. If someone attempted to activate it without disarming the trap, they would be injured by an energy discharge.