Location Anomalies (GPS & EXIF Fraud)

Go to Reports → Location Anomalies. Lists check-ins flagged for GPS issues, with full distance breakdowns and the EXIF-mismatch fraud signal.

Three distance columns

• Browser dist. — phone GPS at submit → site centre. Standard geofence check.
• Camera dist. — photo's EXIF GPS (extracted from the camera at capture) → site centre. Secondary geofence check.
• EXIF Δ — phone GPS at submit ↔ photo's EXIF GPS. This is the primary fraud signal.

What EXIF Δ tells you

For a fresh on-site photo taken right before submitting the form, browser GPS and camera EXIF GPS should agree within ~50 m (just GPS noise + the seconds-long gap). When they disagree by hundreds of metres, the photo wasn't taken just then on this device — possibly a stock image, screenshot, or a photo from a previous day.

Color coding: green (<50 m, normal), amber (50–200 m, possibly elevated), red bold (≥200 m, investigate). Rows ≥200 m are tinted red.

Filters

• Min browser distance (m) — drop records that have GPS but aren't actually far from the site (cleans up the list when there are non-location reasons mixed in).
• Min EXIF mismatch (m) — keep only suspected fraud. Suggested threshold: 200 m.

"no exif" rows

Some records show no exif in the Camera dist column — the photo carried no EXIF metadata. This happens with screenshots, downloaded images, or photos that have had their metadata stripped. Often a fraud signal in itself.

Top KPI cards

Flagged check-ins, with-camera-EXIF count, and high-EXIF-mismatch count (≥200 m).

Export

CSV / PDF — exports the full record list with all three distance columns.