Pick-to-light or voice picking — which do I choose?

PTL suits dense, fixed, high-pick zones (or put-to-light at sortation). Voice picking is better in large warehouses with bulky products where hands-free matters. It depends on layout and profile.

How much do these cut errors?

Typically below 0.1% error rate, versus 1-3% for paper-list picking. Direct impact: fewer returns, chargebacks and stock corrections.

Do I need a WMS for pick-to-light?

Yes. Lights/voice are just the interface; the WMS decides what, where and how much to pick, orchestrates batches and validates operations in stock.

← Back to glossary

Category: Tehnologie · Acronym: PTL

Pick-to-light / Voice picking

Quick answer: Technologies guiding picking via shelf lights or voice commands, for maximum speed and accuracy.

Key takeaways

Speed — no reading lists or screens, direct guidance
Accuracy — error rates below 0.1%
Short learning curve — new operators become productive fast
Hands-free (voice) — useful for heavy/bulky handling

What pick-to-light and voice picking are

Pick-to-light (PTL) uses light indicators on locations showing the operator where and how much to pick, confirmed with a button. Voice picking guides the operator via audio instructions, hands-free, confirmed by voice.

Advantages

Speed — no reading lists or screens, direct guidance

Accuracy — error rates below 0.1%

Short learning curve — new operators become productive fast

Hands-free (voice) — useful for heavy/bulky handling

When it is worth it

PTL is ideal for high-density picking zones (put-to-light at batch sortation). Voice picking excels in large warehouses and for bulky products. Both need a WMS to orchestrate them.

How Azuvio helps

The Azuvio WMS integrates with PTL and voice systems, orchestrating guided picking and sortation, with real-time validation of each operation for maximum accuracy.

Frequently asked

Pick-to-light or voice picking — which do I choose?: PTL suits dense, fixed, high-pick zones (or put-to-light at sortation). Voice picking is better in large warehouses with bulky products where hands-free matters. It depends on layout and profile.
How much do these cut errors?: Typically below 0.1% error rate, versus 1-3% for paper-list picking. Direct impact: fewer returns, chargebacks and stock corrections.
Do I need a WMS for pick-to-light?: Yes. Lights/voice are just the interface; the WMS decides what, where and how much to pick, orchestrates batches and validates operations in stock.

Where Azuvio fits

Related terms

Picking — The process of retrieving products from warehouse locations to fulfil an order — the most costly warehouse activity.
Batch picking — Picking several orders in one warehouse pass, grouped by common SKUs.
WMS (Warehouse Management System) — The system orchestrating physical warehouse operations: receiving, putaway, picking, packing, shipping.
Inventory accuracy — The degree of match between book stock (in the system) and physical stock (in the warehouse) — the operation's health metric.

Last updated: 2026-07-06