A wireless device operates in an operating state determined as a function of the wireless device's physical speed. In some implementations, the wireless device determines the physical speed using a GPS (global positioning system). If the wireless device determines based on the physical position and/or physical speed that the user is driving an automobile in a region in which using a wireless device is not permitted while driving, then the wireless device automatically disables device features. However, if the user is actually a passenger, then the user may over-ride the automatic disabling of device features. In some implementations, the wireless device also informs other wireless users that communication is inappropriate or impossible. In some implementations, the wireless device also informs a communications node to process communications directed to the wireless device.