احرام

## The Problem We Solved

During حج, حجاج move through multiple sacred sites requiring specific rituals. احرامOS brings the right information automatically based on where you are.

## Geofencing: Virtual Sacred Boundaries

احرامOS defines geofence zones around each key location: the Haram, the Mataf, the سعی corridor, منیٰ, عرفات, مزدلفہ, and جمرات. These boundaries are stored locally.

## How Location Detection Works

Your GPS receiver calculates position using satellite signals. احرامOS monitors these updates and compares against stored boundaries. When you cross into a zone, relevant content triggers automatically.

## Sensor Fusion for طواف Counting

GPS alone is insufficient inside the Haram structure. احرامOS combines GPS with accelerometer readings that detect walking patterns and directional changes. The system identifies circuit completion at the حجر اسود corner.

## Privacy-First Processing

All GPS data is processed on-device. Location is never transmitted to servers unless you enable group tracking. Movement history remains private.

## Battery Optimization

During active tracking, GPS polls at high frequency. During passive geofencing, low-power APIs batch updates efficiently. Target: less than 5% battery per hour.

## Accuracy and Limitations

Inside the Haram, GPS accuracy degrades. Sensor fusion mitigates this but cannot eliminate limitations. Manual adjustment of counts is always available — technology is a helper, not an authority.