Comprehensive and Detailed Explanation:

Real-Time Location Systems (RTLS) utilize various technologies to track and locate assets or individuals in real-time. The methods include:

A. Sound:Ultrasonic sensors can be used for location tracking by measuring the time it takes for sound waves to travel between devices.

B. 802.11-capable laptops:Wi-Fi-based RTLS can leverage existing 802.11 infrastructure and devices to determine location based on signal strength and triangulation.

C. Active RFID:Active RFID tags have their own power source and can transmit signals to readers, allowing for real-time tracking over longer distances.

D. Infrared:Infrared sensors can be used for location tracking, especially in environments where line-of-sight is available.

F. UWB (Ultra-Wideband):UWB technology provides high-precision location tracking by transmitting signals over a wide frequency spectrum.

G. Passive RFID:Passive RFID tags do not have their own power source and are activated by the electromagnetic field of a reader, suitable for tracking items in close proximity.

E. UHV:Ultra-High Voltage (UHV) is not a technology used in RTLS and is therefore not applicable.