How accurate are GPS trackers?
Metres on a good sky, a building when the sky goes away. Marketing that promises a bedroom door is selling a different radio.
Accuracy questions are usually fear in disguise: will I find them, or a ghost two streets over? This page is the physics, then Kin’s specific fallbacks, then what to stop expecting.
What “accurate” is being asked to mean
A good sky versus a canyon
Open park: GPS is in its element. Downtown glass and trees: the fix jumps. That jump is not a broken child; it is geometry.
Indoors is a different measurement
Satellites do not love roofs. Wi-Fi positioning estimates from networks the device can hear. Treat it as “inside this place,” not “third desk on the left.”
Update rate is not accuracy
A point every few seconds while you follow is freshness. It can still be the wrong side of a building.
A geofence edge will false-fire sometimes
Arrive/leave on a tight school polygon can jitter. Draw places with a little room, or you will train yourself to ignore them.
How Kin Watchdog works
Set up the tracker
Charge Kin One and switch it on. The SIM is already inside and already paid for — there is no carrier to call.
Add it to your family
Scan the code in the Kin app and name who wears it. Authorised family members see the same map on their own phones.
View location
Open the app for whether they arrived or left a place you named. Follow mode is a live position only while you are looking.
Create alerts
Draw a safe place — home, school, the yard. One nudge on arrival, one on leaving. Nothing in between.
Find the right tracker for your family
Kin One
Worn as a watch, collar, or lanyard. Not a phone, not a smartwatch, and not a monthly tracking subscription.
Accuracy questions
How accurate is Kin One?
Outdoors, street-level when the sky is visible. Indoors, Wi-Fi fallback. We do not publish a fake centimetre number.
Is military GPS more accurate?
Consumer devices use the civilian GPS (and often other constellations). Do not expect battlefield precision from a family locator.
Why did the pin jump?
Reflections, indoor/outdoor edges, or a weak satellite view. Wait a moment in follow mode rather than driving to the glitch.
Can it tell me which floor of a mall?
Not as a promise. Vertical error is a known GNSS weakness.
Does more expensive mean more accurate?
Often it means more radios or a better antenna, not magic. Battery and network still decide whether you get a point at all.
Is Bluetooth more precise up close?
At a few metres, a tag can be “near this phone.” That is proximity, not a child in a field. See the Bluetooth guide.
- How do GPS trackers work — Kin Watchdog
- Kin One — Kin Watchdog
Street-level is the honest outdoor product
If you needed room-level indoors, you are shopping sensors and floor plans, not this locator.