Beacon is a modern and innovative device that emits a signal which can be picked up by nearby mobile devices. This signal is used to trigger location-based actions or provide specific information to users within a certain proximity. Beacons are often used in retail settings to send notifications about sales or promotions to customers as they walk by a store. Additionally, beacons can be used for indoor navigation, asset tracking, and monitoring visitor behavior in museums or other attractions. Overall, beacons are a versatile tool that can enhance the user experience and provide valuable insights for businesses.