GPS Tracking6 min read
GPS Asset Tracking: How to Stop Losing Valuable Equipment
GPS asset tracking explained: how trackers report, which device fits each asset, and how cellular, battery and BLE options compare.
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✦ Magic and Science in Action
A little magic. A lot of science. And GPS, finally explained.
Mo’ Saci Science is a friendly hub for understanding GPS, GNSS and the technology behind knowing where anything is. Satellites, signals and trackers, made clear.
MoSaciScience is not Mosaic Science. Looking for the magazine? Visit Mosaic Science.
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Who is Saci, and why GPS?
Saci is a one-legged trickster from Brazilian folklore who wears a red magical cap. As people who build with science and technology, we think the best ideas come from keeping that childlike wonder alive. So we put “Mo’ Saci” into science, and pointed all that curiosity at one beautifully practical question: how do we always know where things are?
Read our story →Start here
Your GPS hub, four doors in
Pick a path. Everything connects.
The 60-second version
Every GPS fix is just three parts working together
🛰️01
Space Segment
A constellation of 30+ satellites circling Earth twice a day, each broadcasting its position and a precise time.
📡02
Control Segment
Ground stations that track every satellite, check its health and keep its clock honest to the nanosecond.
📱03
User Segment
The receiver in your phone, car or tracker that listens to several satellites and works out exactly where it is.
The constellations
Meet the systems behind your blue dot
GPS is one of four global networks circling overhead right now. Most modern receivers listen to all of them at once. Hover a system to follow its satellites.
Fresh from the blog
Field notes worth your time
Buying Guides7 min read
Best 8 Tool Tracking Systems for Contractors
The best tool tracking systems for contractors, compared by tracking method, readers needed, check-out features and published price.
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Buying Guides7 min read
Top 7 Non-Powered Asset Trackers (Battery and Solar)
7 battery and solar trackers for non-powered asset tracking, from generators to bins, compared on battery life, network and mounting.
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Where to go next
GPS tracking beyond the theory
We explain the science and do not sell hardware. When readers ask where tracking actually gets used, these are the pages worth a look.
Stay curious
Got a GPS question we haven’t answered yet?
Send it our way. We turn the best questions into clear, friendly guides.