28■ Medical devicesOperation of any radio transmitting equipment, including wirelessdevices, may interfere with the functionality of inadequatelyprotected medical devices. Consult a physician or the manufacturerof the medical device to determine if they are adequately shieldedfrom external RF energy or if you have any questions. Switch off yourdevice in health care facilities when any regulations posted in theseareas instruct you to do so. Hospitals or health care facilities maybe using equipment that could be sensitive to external RF energy.Implanted medical devicesManufacturers of medical devices recommend that a minimumseparation of 15.3 centimeters (6 inches) should be maintainedbetween a wireless device and an implanted medical device, suchas a pacemaker or implanted cardioverter defibrillator, to avoidpotential interference with the medical device. Persons who havesuch devices should:• Always keep the wireless device more than 15.3 centimeters(6 inches) from the medical device when the wireless device isturned on.• Not carry the wireless device in a breast pocket.• Hold the wireless device to the ear opposite the medical deviceto minimize the potential for interference.• Turn the wireless device off immediately if there is any reasonto suspect that interference is taking place.