Abstract: In general, in one aspect, the disclosure describes a wireless device that is capable of linking to a vehicle via a close range antenna, such as a Bluetooth antenna. Once the wireless device is linked to the vehicle it can receive location data and determine the speed of the wireless device. If the speed exceeds a predefined threshold the wireless device may have its wireless communications deactivated. If the wireless device is utilizing a hands free device wireless communications may be permitted. The use of the link to the vehicle ensures that the wireless device will not be deactivated when, for example, it is used on a train. In addition, waiting to gather location data and determine speed until when the wireless device is associated with a vehicle will save battery life. The wireless device may have a speed determination scheme that takes into account GPS multipath.

Abstract: In general, in one aspect, the disclosure describes a narrow beam jammer to generate jamming signals for the regional cellular frequency ranges for use in vehicles. The narrow beam is directed at the location of the driver so that jamming and detection of communications is limited thereto. The initiation of the jammer may also be based on other parameters such as vehicle speed and Bluetooth synchronization. Other embodiments are described and claimed.