A fashion accessory provides a visual alert for the presence of a mobile communication signal from a nearby but not physically connected communication device. The accessory includes a signaling assembly for providing a visual signal when a mobile communication signal is detected within a defined distance, an antenna connected to the signaling assembly and extending from it, and an elongated member configured for attaching the fashion accessory to a body part or personal article. The signaling assembly may include a circuit module with an LED providing a visible signal when an adjacent mobile communication device is transmitting a signal within the defined distance. The defined distance is selected so as to make the fashion accessory responsive only to signals from a mobile device within a user's personal space.