Which device can be utilized to track personnel on site during an event?

RFID, or Radio-Frequency Identification, is particularly effective for tracking personnel on site during an event due to its ability to automatically identify and track tags attached to objects or individuals through radio waves. This technology typically involves a reader that emits radio signals and receives signals back from the RFID tags, allowing for real-time tracking without the need for direct line-of-sight and can cover multiple personnel at once.

Its key advantage lies in its reliability and low power requirements, which make it suitable for environments where multiple individuals may need to be tracked simultaneously. RFID can provide precise location data and is often used for access control, inventory management, and personnel monitoring at events.

Other options like GPS, Bluetooth, and Wi-Fi have their advantages but may not offer the same level of efficiency or accuracy in densely populated environments like events. GPS, for instance, requires a clear line of sight to satellites and may struggle indoors or in crowded spaces; Bluetooth has limited range and is more suited for short-distance communication; and Wi-Fi is primarily designed for internet connectivity rather than tracking purposes.