"The panic buttons have been distributed to women who already have restraining orders against abusers, mostly former partners. According to court officials, the project has also worked as a deterrent for would-be abusers because no one knows who actually has them. The device itself is smaller than a mobile phone. Women carry it on an elastic belt under their clothes. When the victim activates it, by holding down a small button for three seconds, a GPS signal is sent and an alarm goes off at the police station handling the panic button project." (Quoted from article)