Here is another self-defense iPhone accessory that can get you out of trouble. The KATANA Safety Wallet for iPhone attaches directly to your phone. It comes with an audible siren that you can activate by pulling the hidden wristband or flicking the red tab. You can also hold the side buttons for 5 seconds to discreetly alert a 24/7 response center.
Users have the option to add up to 7 trusted friends to their circle to get notified with a message and GPS location in case of an emergency. The KATANA Safety Wallet can attach to the back of any smartphone.[where to get it]