This document discusses the problem of sexual assault on university campuses and proposes a smartphone application called MACBuddy to help prevent assaults. It provides statistics showing the prevalence of sexual violence against university students. It then describes a scenario where a student is assaulted walking home late at night. The proposed solution is a smartphone app compatible with smart watches that notifies nearby students on the university's secure WiFi network with a double tap, allowing them to come to the assistance of the person in trouble. The app aims to provide an immediate response and a greater sense of security for students.