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79Warnings and precautions
the hearing aid. Do not place credit cards or other magnetic
storage media near the device, because information stored on
them may be erased.
Medical devices
Operation of any radio transmitting equipment, including
wireless phones, may interfere with the functionality of inade-
quately protected medical devices. Consult a physician or the
manufacturer of the medical device to determine if they are
adequately shielded from external RF energy or if you have
any questions. Switch off your device in health care facilities
when any regulations posted in these areas instruct you to do
so. Hospitals or health care facilities may be using equipment
that could be sensitive to external RF transmissions.
Pacemakers. Pacemaker manufacturers recommend that a min-
imum separation of 15.3 cm (6") be maintained between wire-
less devices and a pacemaker to avoid potential interference
with the pacemaker. These recommendations are consistent
with the independent research by and recommendations of
Wireless Technology Research. Persons with pacemakers
should do the following:
• Always keep the device more than 15.3 cm (6") from
the pacemaker.
• Not carry the device near your pacemaker when the
device is switched on. If you suspect interference,
switch off your device, and move it.
Hearing aids. Some digital wireless devices may interfere with
some hearing aids. If interference occurs, consult your service
provider.
Vehicles
RF signals may affect improperly installed or inadequately
shielded electronic systems in motor vehicles such as electronic
fuel injection systems, electronic antiskid (antilock) braking