philosys gmate step User Manual page 14

About the Pedometer
The meter may not be able to count the steps correctly in the
following cases.
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When the memory is being displayed, the
blood glucose is being tested or the meter
is being set.
When the front of the meter is placed in the
angle of less than 60° or horizontal to the
ground.
When the meter is placed in the bag that
moves irregularly because it hits your foot,
your belt or the top of your pants.
When the unit hangs from your belt, the top
of your pants or a bag.
When you walk at an inconsistent pace.
When you use the meter in the place where
lots of up and down movements or
vibrations take place.
When you walk extremely slowly or fastly.