AI Pick-Path: Shorter Routes, More Orders per Day
The average picker in an e-commerce warehouse walks 15–25 km a day. Most of those steps are unnecessary — the result of a non-optimal pick sequence.
Why Pick Sequence Matters
Without optimization, a picker receives an order and collects items in the order they appear on the pick list. This typically means:
- Go to aisle B3 for item #1
- Go back to aisle A1 for item #2
- Go to aisle E7 for item #3
- Go back to aisle B5 for item #4
With optimization, the system recalculates the sequence so the picker moves through the warehouse linearly (or in an S-curve) with no unnecessary backtracking.
How AI Pick-Path Optimization Works
Input: Order + Warehouse Map
The system knows:
- Exact location of every item in the warehouse (aisle, section, rack, shelf)
- Physical warehouse map (aisle widths, dead ends, loading docks)
- Current stock at each position (if one SKU has multiple locations)
Optimization Algorithm
For each order, AI calculates the optimal route using a nearest-neighbour algorithm with return-path optimization. For orders with more than 20 items, a genetic algorithm is used.
Result: a sequence number for each item on the pick list + route map on the mobile device.
Batch Picking: Multiple Orders at Once
At higher fulfilment volumes, AI groups 3–8 similar orders into a batch:
- Orders sharing items from the same warehouse sector
- Orders with similar geographic concentration in the warehouse
The picker completes one pass and collects items for multiple orders. The system tracks which items belong to which order (using colour-coded totes or a barcode scanner).
Results After Implementation
| Metric | Standard Pick | AI-Optimized Pick |
|---|---|---|
| Average travel / order | 280 m | 165 m |
| Picking time / order | 4.8 min | 2.9 min |
| Orders / shift (1 picker) | 75 | 124 |
| Error rate (wrong item) | 1.2 % | 0.3 % |
Bottom line: the same team ships 65 % more orders per day, or you need 40 % fewer people to handle the same volume.
Mobile App Integration
Each picker receives on a phone or tablet:
- Visual pick list with sequence numbers
- Warehouse map showing current position and next stop
- Barcode scanner to confirm each item
- “Done” indicator after the last item + dispatch position number
