GPH LandTag

GPH LandTag turns the printed QR sign at an irrigation site into instant access
to that site's valve map — no account, no password, no setup.

FOR VISITORS
• Scan the sign at the gate and the site map opens straight away.
• See every valve plotted on a satellite map.
• Pick a valve and walk to it with live on-screen guidance until you are standing on top of it.
• Search valves by name or note.

FOR CREWS
• Tag a new valve where you stand — the GPS position is filled in for you.
• Add a name and a note; edit or remove a valve later.
• Works fully offline. Every change is saved on the phone and uploaded by itself
once you are back in signal, without duplicates and without losing another
crew member's edit.

BUILT FOR THE FIELD
• Offline-first: the app never blocks on the network.
• Site access codes are stored in the phone's secure storage and can be revoked
by the site owner at any time.
• Location is used only while the app is open. No background tracking, no
location history, no advertising, no analytics SDKs.
• No accounts — the app never asks who you are.

Access requires a QR code from a site operated with GPH LandTag.