A d d i t i o n a l s a f e t y i n f o r m a t i o n73• hold the device to the ear opposite the pacemaker to minimize the potentialfor interference.If you suspect interference, switch off your device and move the device away.Hearing aidsSome digital wireless devices may interfere with some hearing aids. If interferenceoccurs, consult your service provider.■ VehiclesRF signals may affect improperly installed or inadequately shielded electronicsystems in motor vehicles such as electronic fuel injection systems, electronicantiskid (antilock) braking systems, electronic speed control systems, air bag systems.For more information, check with the manufacturer or its representative of yourvehicle or any equipment that has been added.Only qualified personnel should service the device, or install the device in a vehicle.Faulty installation or service may be dangerous and may invalidate any warrantythat may apply to the device. Check regularly that all wireless device equipmentin your vehicle is mounted and operating properly. Do not store or carry flammableliquids, gases, or explosive materials in the same compartment as the device, itsparts, or enhancements. For vehicles equipped with an air bag, remember that airbags inflate with great force. Do not place objects, including installed or portablewireless equipment in the area over the air bag or in the air bag deployment area.If in-vehicle wireless equipment is improperly installed and the air bag inflates,serious injury could result.Using your device while flying in aircraft is prohibited. Switch off your devicebefore boarding an aircraft. The use of wireless teledevices in an aircraft may bedangerous to the operation of the aircraft, disrupt the wireless telephone network,and may be illegal.■ Potentially explosive environmentsSwitch off your device when in any area with a potentially explosive atmosphereand obey all signs and instructions. Potentially explosive atmospheres include areaswhere you would normally be advised to turn off your vehicle engine. Sparks in suchareas could cause an explosion or fire resulting in bodily injury or even death. Switchoff the device at refuelling points such as near gas pumps at service stations.Observe restrictions on the use of radio equipment in fuel depots, storage, anddistribution areas, chemical plants or where blasting operations are in progress.Areas with a potentially explosive atmosphere are often but not always clearlymarked. They include below deck on boats, chemical transfer or storage facilities,vehicles using liquefied petroleum gas (such as propane or butane), and areas wherethe air contains chemicals or particles such as grain, dust or metal powders.