Using this ability, a shield can be placed around any surface. It will be invisible unless touched, and will then electrocute the person or object which comes into contact with it. The shield could be placed around an object, to make it impossible for someone to touch it, or on a doorway to prevent people from passing through. It can also be placed around a person, but would then make all physical contact impossible for that individual until the shield is removed. However, a person with any kind of immunity or defence against electricity wouldn't be blocked using this shield.