• Since GPS is governed by the United States
Department of Defense, the GPS signals
might be controlled (degradation of accuracy,
signal blackouts, etc.) according to national
security reasons of the US. Also even if
positioning is done in the same locations
and environments, identical results may not
be obtained due to the differences in signal
conditions caused by the locations of the
satellites.
• Wireless communication products (mobile
phone or data detector etc.) may intercept
satellite signal and signal reception may not
be stable.
• Depending on the legal system of the
country and area, the displayed map based
on the received location information (lat/long
information) may not be accurate.
• Since GPS uses signals from satellites, in the
following environments there are locations
where signals cannot be received or reception
is poor. Thus, the range of error of location
information may be over 300 m.
- In the midst of or underneath dense tree
growth, in areas lined with buildings or
dense residential areas
- Inside or underneath buildings
- Inside of underground tunnels, underground
and underwater
- Near high-voltage lines
- Inside of cars and trains
- In poor weather such as heavy rainfall and
snow
- Inside of bags and boxes
- Hindrances (people and things) around this
terminal
• Please check the websites of the GPS
service provider and DOCOMO for news
regarding the usage of positioning provisions
and current locations notifications. Also using
these functions may incur charges.
201
Application
