No factor is more critical than
coverage. FTC Sensor Packs provide global coverage,
from mid-ocean to vast desert and wilderness areas.
The map shows tested coverage areas.
Licensed areas are shown in yellow, green and orange. Functionally,
the system covers the entire planet except for low coverage on
the north and south poles. The use of technologies such as RFID,
ZigBee, cellular and wi-fi do not provide worldwide coverage.