If someone's home is 30' by 30' feet, yes, that person's device will report them having left their home and they'll get a visit if GPS suddenly shifts 30 feet to the left.

I'm talking about the class of problem. It happens in normal weather conditions and things like this exacerbate the problem.

Really not sure what the hostility's about.

As a neutral participant I think “the hostility” is probably because of your condescending tone when you said “hopefully it helps your confusion”. Your initial article really didn’t say anything about people being re-incarcerated for these sorts of errors. I really want to say “maybe you got CONFUSED and posted the wrong one!” but that would be snotty and condescending too.

But maybe you posted the wrong one to begin with.

Let’s all be friends and nice to each other.

GPS is not that accurate even on a good day. A small device attached to someone’s ankle with a small antenna and an obstructed view of the sky will frequently be registering locations outside of the footprint of someone’s house.

A single 33 foot anomaly is already within the geofence buffer zones used. In dense urban areas the geofence buffer allowance may be 10X that already.

Do you have any examples of someone getting thrown behind bars due to a GPS error on the order of ~30ft like you're claiming? That's all I'm asking. Really don't understand why you keep avoiding it. You've essentially claimed police/judges are doing something rather stupid and terrible. I'm asking you to show example(s) of what you claimed (~30ft error → thrown behind bars), not something significantly different (~1+ mi error → only-police-visit-but-not-thrown-behind-bars).