Canon POWERSHOT S100 User Manual page 114

Using the GPS Function
At certain intervals, the positioning data
and date/time based on the GPS satellite
signal will be recorded in a log file.
_} will appear in the upper right of the screen in Step 2 when a GPS log file is
created. If this icon appears, exercise caution when formatting the memory card
(pp. 23, 177), as all GPS log files will also be erased.
If [GPS Logger] is set to [On], battery power will be consumed even when the
camera is turned off. If the camera is in an environment where a GPS signal
cannot be received (indoors, etc.), the battery may be depleted in half a day even
if you do not shoot. Be sure to set [GPS Logger] to [Off] in Step 2 to prevent
battery consumption when not using the logger function.
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