This document summarizes several existing research papers on women's safety systems that use IoT technologies like GPS, GSM, and sensors. It describes systems that monitor women's vital signs and location and send alerts to emergency contacts if thresholds are exceeded, indicating a threat situation. When triggered, the systems send alerts containing the woman's location to help ensure a rapid response. The goal is to develop an advanced, discreet personal safety device for women to protect them from crimes and help overcome social challenges.