# Lie Detection > Canonical: https://pinflag.io/features/lie-detection PinFlag reads the lie from the course itself. Every hole ships as a course map of tee, fairway, rough, sand, fringe, green and hazards, and the app prices where you are and where you are aiming from the matching table: from 150 yards that is 2.945 strokes in the fairway, 3.190 in the rough and 3.250 in the sand. The same yardage is a different shot from a different lie, and the published tables say by how much. PinFlag carries every hole as a course map and reads two points off it: where your ball lies, and where your aim point sits. The number you see before the swing is priced from the lie you are actually on to the lie you are actually aiming at, and the shot you log afterwards is scored the same way. The differences are large. From 150 yards the tour average needs 2.945 strokes from the fairway, 3.190 from the rough and 3.250 from a fairway bunker. From 25 yards it is 2.450, 2.638 and 2.603. A target on the fringe, on the green, in greenside sand or in a hazard is priced from its own table, and a hazard carries the penalty stroke, so the aggressive line shows its real cost. You confirm the lie in one tap when you log a shot, and the app reads the map for you. Because the lie sits inside the number rather than beside it, strokes gained by category, proximity by lie and the start-position table in Insights are all built on the ground the ball was really on. ## What it does - Tee, fairway, rough, sand, fringe, green and hazards mapped for every hole - Your position and your target both read off the map and priced from the matching table - A target in water or out of bounds priced with the penalty stroke and the drop included - The lie confirmed in one tap when you log the shot, with the map read for you - Recovery and penalty lies priced from their own tables plus the stroke itself - Insights built on the recorded lie: strokes gained by category, proximity by lie, start position by lie ## Frequently asked questions **How does PinFlag know my lie?** From the course itself. Each hole ships as a course map of tee, fairway, rough, sand, fringe, green and hazards, and the app reads your position and your target off it. You confirm the lie in one tap when you log the shot. **How much does the lie change the number?** From 150 yards the published baseline is 2.945 strokes from the fairway, 3.190 from the rough and 3.250 from sand, so the same yardage is priced as three different shots. From 25 yards it is 2.450, 2.638 and 2.603. **Is the lie at my target priced as well as my own lie?** Yes. The aim point is read off the same map, so a target on the fringe, in a bunker or over water is priced as that spot, and a hazard carries the penalty stroke and the drop in the price. **Does lie detection work without a signal?** Yes. The course maps live on your phone, so the lie is read and priced whether or not there is coverage.