A new electronic device and mobile app called pd.id (Personal Drink ID), aims to help prevent sexual assaults that occur after a victim has been unknowingly drugged.

Sexual assault is an epidemic in the United States. Nearly one in five — 20 million — U.S. women and girls have been raped in their lifetimes, and 3 million U.S. women have experienced drug-facilitated rape, according to a 2007 study by the Medical University of South Carolina. Another 1.6 million men and boys have also been victims of sexual assault, according to a similar study conducted by the U.S. Centers for Disease Control and Prevention in 2010.

Currently in development in Toronto, pd.id detects and sends an alert to your phone if someone has drugged your drink. The reusable, 3.5-inch device looks like a small USB key. It’s designed to be small enough to fit in your pocket or purse, and it can be discretely dipped in and out of a drink.