A Bluetooth beacon is a small wireless device that broadcasts a low-energy signal to nearby smartphones and tablets using Bluetooth technology. These signals can trigger location-based actions, such as sending notifications, providing directions, or offering information when a device enters a designated area. Beacons are commonly used in museums, retail stores, and public venues to enhance user experiences without requiring GPS. They operate efficiently with minimal power consumption and prioritize user privacy by transmitting only anonymous identifiers. No personal data is collected unless explicitly consented to by the user. Beacons support smart, contactless interactions in public spaces while maintaining security and simplicity.