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2. SPOT Satellite Messenger - Wikipedia

   en.wikipedia.org/wiki/SPOT_Satellite_Messenger

   SPOT is a GPS tracking device that uses the Globalstar satellite network [1] to provide text messaging and GPS tracking (depending on the subscription type purchased). [2] [3] It has a coverage area that includes a large portion of the planet, with the exception of extreme northern and southern latitudes and parts of the Pacific Ocean. [4]

3. Drifter (oceanography) - Wikipedia

   en.wikipedia.org/wiki/Drifter_(oceanography)

   Typical sensors acquire air pressure, sea surface temperature, irradiance and salinity. A drifter (not to be confused with a float) is an oceanographic device floating on the surface to investigate ocean currents by tracking location. They can also measure other parameters like sea surface temperature, salinity, barometric pressure, and wave ...

4. GPS tracking unit - Wikipedia

   en.wikipedia.org/wiki/GPS_tracking_unit

   A GPS tracking unit, geotracking unit, satellite tracking unit, or simply tracker is a navigation device normally on a vehicle, asset, person or animal that uses satellite navigation to determine its movement and determine its WGS84 UTM geographic position (geotracking) to determine its location. [1]

5. Acoustic Doppler current profiler - Wikipedia

   en.wikipedia.org/wiki/Acoustic_Doppler_Current...

   A bottom-mounted ADCP can measure the speed and direction of currents at equal intervals all the way to the surface. Mounted sideways on a wall or bridge piling in rivers or canals, it can measure the current profile from bank to bank. In very deep water they can be lowered on cables from the surface. The primary usage is for oceanography. [4]

6. Tile (company) - Wikipedia

   en.wikipedia.org/wiki/Tile_(company)

   Tile, Inc. (stylized as tile) is an American consumer electronics company which produces tracking devices that users can attach to their belongings such as keys and backpacks. A companion mobile app for Android and iOS allows users to track the devices using Bluetooth 4.0 in order to locate lost items or to view their last detected location. [1]

7. Satellite navigation device - Wikipedia

   en.wikipedia.org/wiki/Satellite_navigation_device

   Vehicle navigation on a personal navigation assistant Garmin eTrex10 edition handheld. A satellite navigation device or satnav device, also known as a satellite navigation receiver or satnav receiver or simply a GPS device, is a user equipment that uses satellites of the Global Positioning System (GPS) or similar global navigation satellite systems (GNSS).