Guardian is the brainchild of IIT-Delhi students. It is a device that can be used as a communication system to alert your loved ones to a distress situation. After the horrific Delhi gang rape, a device like Guardian is the need of the hour. It is a smartphone app that is paired with a prototype jewellery piece, and gets activated when a push button on the jewellery piece is tapped twice. It uses multiple cellular phone towers to transmit data and triangulate a victim’s position, thus serving as a lifesaving whistleblower.