Star Wars: A Flicker of Hope
Despite the name, this device is available in a variety of shapes and sizes, the most common being a large, ornamental ring. Diplomats, wealthy CEOs, and anyone who fears kidnapping or ambush wear panic rings. A secret catch (DC 25 Perception check) reveals a small button that, when pressed, releases an encrypted emergency signal. This signal has a range of 100 kilometers and continually broadcasts a preset signal-usually “wearer in danger”—to local law enforcement, personal security, or any other group designated by the wearer. Changing this signal requires a DC 25 Mechanics check, and failure by 5 or more activates the panic ring.
Source: Galaxy of Intrigue, p. 66.