Google “improvised weapons” and you will find instructions on how to use ordinary keys in self-defense, so this is why I titled this tip the way I did. Nevertheless, to me a bunch of keys is not an improvised weapon. To me keys are ordinary utility objects used in an emergency to defend oneself, much like an ordinary pencil or a sturdy umbrella. “Improvise” means making something needed out of what is conveniently on hand. A key or a bunch of keys are not “made” into anything–they are put to a less usual use without changing them in any way. If you think the distinction does not matter, then have a lawyer explain to you why it does.
Now to the tip’s topic: the use of keys in self-defense.
Have you seen pictures like the one below?
If you hold keys like this and hit an attacker, you may hurt him a bit but you will hurt your hand. And it is not good to have an injured hand in a fight. . . . The following video shows how to correctly use keys in self-defense. It also teaches which keys are better not to be used for self-defense.
Keys as Improvised Weapons with Alain Burrese