There’s a gadget — a little stick —  which tell women if drinks are been drugged and designed to ease that date-rape drug anxiety. It’s called pd.id, or the “personal drink ID.”

Here’s how it works: Stick the pocket-sized gizmo into your drink, and it will scan for color, conductivity and temperature. It then takes that information and compares it to a database of drinks it knows by connecting to an app on your phone.

If it finds that the drink is red wine and nothing more, a green light flashes. But if it spots a common date-rape drug like Ambien or Rohypnol, the red light lets you know to pour it out and consult the smartphone app, which will tell you what was in it.

pd.id relies on proven technology that has been used by drug enforcement agencies, such as the U.S. DEA, for years.