Abstract: A two-part self-defense apparatus is disclosed. The apparatus is configured for use with a handheld electronic device such as a cellular phone. A removable protective case configured for installation on the handheld electronic device is one part of the apparatus, and a self-defense module containing a self-defense weapon is the other part. The two parts may be connected to form a unitary working unit, and may be disconnected when the self-defense module is not needed or desired. In a preferred embodiment, the self-defense weapon is a stun gun and the handheld electronic device is a cellular phone.

Abstract: The technologies disclosed herein introduce an electroshock weapon system for a mobile device. The system can discharge electrical energy as intended to be used as a means of self-defense. In one embodiment, the apparatus includes a housing, an electroshock module and a battery. The housing has a shape adapted to secure to the mobile device, and the electroshock module and battery are positioned inside the housing. The electroshock module is configured to release an electric shock. The battery is configured to supply electrical power to the electroshock module and, optionally, the mobile device.