Repeatable Location Lab

Capture a place, save it as a reference point, then return later and compare your live reading against saved points.

Live position

Latitude
—
WGS84
Longitude
—
WGS84
GPS accuracy
—
Reported radius
Altitude
—
Above sea level (if provided)
Heading
—
Device compass
Motion
—
Accelerometer availability
Waiting for location permission. Use HTTPS or localhost and allow location access.

Save a reference point

Start live location to enable saving and comparison.

A saved point stores coordinates, reported accuracy, heading, timestamp and optional notes on this device.

Map

Map tiles require an internet connection. Your saved points remain available offline on this browser, but the map background may not.

Saved reference points 0

No saved points yet.

Optional camera reference

Capture a photo of the surroundings as a visual reminder for a saved point. This prototype does not run visual place recognition or match camera images automatically.

Camera is off.

How to interpret the comparison

Near
Distance ≤ 5 m
Candidate match only; check GPS accuracy.
Possible
5–20 m
Nearby, but not the same exact spot.
Far
Over 20 m
Not a likely match.

These are configurable demo thresholds, not guarantees. If GPS accuracy is ±25 m, a reported 2 m distance cannot prove you returned to the same physical spot.