When a tech starts a visit, the app captures the device's GPS location if foreground location permission is granted. If the customer has saved coordinates, the app compares the check-in point to the customer location and warns the tech when the distance looks wrong.
Warning threshold
PoolStamp warns the tech when check-in is more than 250 meters from the customer's saved coordinates. Missing GPS permission or missing customer coordinates means no proximity warning is shown.
Common causes
- The tech checked in from home, in the truck, or at the wrong customer.
- The customer address is wrong in the app (they moved, or the CSV import geocoded the billing address).
- GPS accuracy was weak under tree cover, near tall buildings, or indoors.
Turning it off
There is no customer-level GPS toggle. If the device does not grant location permission, PoolStamp still lets the visit proceed without coordinates.
Data retention
Check-in and check-out coordinates may be stored with the visit when permission is granted. PoolStamp does not track the tech between stops or record background location. There is no route breadcrumb.