Direct answer
GPS mileage reimbursement captures location points during shift sessions, calculates road-distance (not straight-line), rolls up daily totals, and links them to expense claims for accounts approval.
GPS mileage reimbursement works in five steps:
1. **Employee starts shift** on mobile — GPS capture activates
2. **Location points** recorded at intervals with timestamps
3. **Distance engine** calculates road-distance from point sequences
4. **Session/daily rollups** produce mileage totals per employee
5. **Expense claims** reference verified distance; accounts approves with audit trail
Road-distance calculation typically reduces inflated claims by 5–15% versus manual estimates because it reflects actual routes driven.