How should the main door orientation be measured? Methods for recording and checking a phone compass reading
KarmaSpace translation

Before measuring, first write clearly which line you are measuring
"My home faces south" may refer to the view from the window, the orientation of the building in the estate, or the outward direction of the main door. These may not agree. If a tool asks for the main door orientation, record the direction through the doorway when a person inside the home faces outward through the door; do not substitute a reading taken while looking back into the home.
The "sitting orientation" of the whole residence involves the feng shui method adopted and its orientation rules, and may not be directly represented by the reading at the unit's main door. First record "unit door orientation, building orientation, main window orientation" separately; if someone asks only about sitting orientation without explaining the definition, confirm first rather than guessing a number.
The phone should be held flat, and the data should be saved together with the measurement method
Taking iPhone as an example, Apple's compass instructions recommend holding the phone flat and aligning the central crosshair. Other phones and apps may operate differently, so check the relevant instructions first. Face the direction you want to measure, keep your posture and reference line consistent, and avoid unconsciously turning your body while looking at the screen.
It is recommended to record four items: measurement location, the object or line faced, the app and north reference setting, and the reading. Also take a photo showing the relationship between the doorway and the measurement location. A single compass screenshot only shows an angle and does not explain what you were facing, making later verification difficult.
Why does the reading jump when near the door frame?
Apple notes that compass accuracy may be affected by magnetic fields or environmental interference. Metal components near the door, magnetic phone accessories or other objects are environmental factors worth checking; you cannot conclude that the home's "qi" is chaotic just because the reading is unstable. A phone compass is also not a substitute for precise on-site surveying.
Without changing the target direction, you can compare several safe, repeatable positions and note the range of readings. If the readings differ greatly, first check the procedure, accessories and environment, rather than choosing whichever reading best matches expectations. Do not walk onto the road, outside the window or into unsafe positions to pursue a reading.
Do not mix magnetic north and true north
Magnetic north and geographic true north are not the same reference. Different apps or settings may use different north references, and feng shui services may have their own adopted rules. When comparing two people's results, first check the north reference and the measurement line, then discuss whether the numbers differ. Not every difference means one of the people measured incorrectly.
If a 24-mountain reading or a more detailed interpretation is needed, especially when the reading falls near a boundary, a rough "southeast" should not be used in place of a full bearing, nor should several widely differing readings be averaged and treated as a precise answer. The range of uncertainty should be stated clearly, and where necessary, someone with the appropriate measurement capability should be asked to confirm on site.
An example of a record that can be handed to a tool or a consultant
You could write: "The main door faces outward; standing inside the door, the top edge of the phone was aligned with the same reference point outside the door; app X was used, and the north setting was recorded; readings at three positions were close, but a deviation appeared near the door frame; a sketch of the positions and photos are attached." This is far more useful than saying only "facing east," and it lets the other party know which data still need verification.
If the reading falls between two directions, keep both possibilities for the time being and do not rush to place items claimed to neutralize negative energy. The annual chart also requires the direction to be clarified first: you can cross-check with Checking Your Data Before Asking an AI About Feng Shui, to avoid treating measurement error as a conclusion about the annual layout.
Data sources and limits of use
For the explanation of placing the phone flat and environmental interference, see the official Apple document linked at the end; the measurement recording procedure is practical advice compiled for this article, not a professional surveying standard. This article does not provide actual measurement results for any home, and the compass and sketch in the AI-generated illustration cannot be used as readings.
This article was produced with AI assistance and covers data preparation rather than making remote judgments of good or bad fortune. To read the annual directions, you can also see An Introduction to the 2027 Flying Stars; the direction chart belongs to a traditional divination framework and does not represent a proven financial or health prediction.
常見問題
問Is the main door's facing direction determined by standing outside the door and looking in?
If you are measuring the outward-facing direction of the main door, record it as the direction from inside the home facing outward; standing outside the door and looking back inside will give the opposite direction. The method for determining the sitting and facing of the whole home must be confirmed separately.
問If two phones measure different directions, which one should be trusted?
First check the target direction, the flat placement, the north setting and magnetic accessories, then compare under consistent conditions. If the discrepancy persists, one reading should not be picked arbitrarily for a fine-grained judgment.
問What should be done if the reading falls near the boundary between two directions?
Keep the range of readings and the measurement method, and refrain from drawing fine-grained conclusions for now. Boundary interpretations such as the 24 mountains require more reliable data, and an on-site measurement should be arranged where necessary.
資料來源
- Apple Support: Use the compass on iPhone · Instructions on placing the phone flat and on environmental magnetic interference; this is not evidence of feng shui effectiveness.