A system for controlling environmental parameters can include one or more body worn sensor devices that detect and report one or more physical, physiological, or biological parameters of a person in an environment. The sensor devices can communicate sensor data indicative of the one or more physical, physiological, or biological parameters of a person to a hub that processes the data and communicates with one or more devices or systems that can be used to change environmental. In some embodiments, the environment includes a device or machine, such as a motorized vehicle and the hub can communicate with the device or machine to cause a change in the operation or function of the device or machine. For example, the motorized vehicle can be caused to stop or slow down in response to sensor data indicating that the operator is experiencing stress or becomes disabled.
