A transponder is a wireless communications, monitoring, or control device that picks up and automatically responds to an incoming signal.
A wireless sensor and actuator network (WSAN) is a group of sensors that gather information about their environment and actuators, such as servos or motors, that interact with them. All elements communicate wirelessly; interaction can be autonomous or human-controlled.
Z-Wave is a wireless communications technology that is often used in locks, security systems, lighting, heating, cooling and home appliances. Support can be integrated in products or added by retrofitting standard electronics and devices.
Zigbee is a standards-based wireless technology developed to enable low-cost, low-power wireless machine-to-machine (M2M) and internet of things (IoT) networks.