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2. PRINCIPLE OF OPERATION
Depending on SIM-card in use, FindMe operates according to one of
two operating procedures.
Using pre-installed SIM-card, FindMe operates in one of two modes:
standard or tracking The device stays in a sleeping mode most of the
time. According to the time specified in the settings, the beacon “wakes
up”, determine its position, transmits data to 911.fm server, requests
information regarding further operation mode from the server, and again
goes to sleep. Frequency of contacts in the tracking and standard modes,
as well as the tracking mode enabling / disabling is set up in personal area
at www.911.fm. The tracking mode can be enabled / disabled also with
SMS-commands. FindMe has no functionality to receive user commands
and to transmit information to the server «by request». The device and
the server communicate only according to the schedule. When using pre-
installed SIM-card, FindMe operates only with 911.fm service.
After replacement of pre-installed SIM-card, FindMe operates with
any service selected by the user except 911.fm service. Frequency of
contacts is set up by SMS commands to be sent to the number of SIM-
card installed in the device. The message shall include a password (4
digits and separating comma) and the required command. In accordance
with the command parameters, time interval is set to awake the device
and check for SMS messages received from the user. FindMe determines
its position according to satellites of GPS/GLONASS navigation systems
and can send this data in the form of SMS message to mobile phone
