Pick-to-Light vs Barcode Picking: Which Is Better for Warehouses?

As warehouses handle increasing order volumes and more complex inventory structures, choosing the right picking technology has become critical for operational efficiency.

Two of the most widely used methods today are Pick-to-Light systems and barcode scanning picking. While both solutions improve accuracy compared with manual paper picking, they offer different advantages depending on warehouse operations.

In this article, we compare these two technologies to help warehouse managers decide which solution is best for their needs.

What Is Barcode Picking?

Barcode picking is one of the most common warehouse picking methods. Workers use handheld barcode scanners or mobile terminals to scan product barcodes and confirm picking tasks.

The typical workflow looks like this:

• The worker receives a picking list on a handheld device.
• The worker walks to the storage location.
• The product barcode is scanned to confirm the item.
• The quantity is confirmed in the device.

Barcode picking systems are widely used because they are simple and relatively low-cost to deploy.

What Is Pick-to-Light?

A Pick-to-Light system uses LED lights installed on warehouse shelves to guide workers directly to the correct picking location.

When an order is released from the warehouse management system (WMS), the light modules illuminate to indicate:

• Which location to pick from
• How many items to pick

The operator simply follows the light, picks the item, and presses a confirmation button.

This visual guidance greatly simplifies the picking process.

Pick-to-Light vs Barcode Picking: Key Differences

Picking Speed

Pick-to-Light

Pick-to-Light systems guide workers directly to the correct location, eliminating the need to read lists or search for items.

This can significantly reduce walking and searching time, allowing warehouses to achieve 30–50% faster picking speeds.

Barcode Picking

Workers must read instructions on handheld devices and scan barcodes to confirm items. This process takes more time per pick.

For warehouses with high order volumes, this can limit productivity.

Order Accuracy

Pick-to-Light

The visual guidance provided by light modules helps workers quickly identify the correct location, reducing human errors.

Pick-to-Light systems can achieve very high order accuracy rates, often close to 100%.

Barcode Picking

Barcode scanning also improves accuracy because items must be scanned before confirmation. However, errors can still occur if the wrong item is picked before scanning.

Worker Training

Pick-to-Light

Pick-to-Light systems are extremely intuitive. New workers only need to:

• Follow the light
• Pick the item
• Press the button

Training typically takes less than one hour.

Barcode Picking

Workers must learn how to operate handheld terminals and navigate software interfaces, which usually requires more training time.

System Cost

Pick-to-Light

Pick-to-Light systems require hardware installed on each picking location, which can increase initial investment.

However, newer compact light modules with simple buttons have significantly reduced hardware costs.

Barcode Picking

Barcode systems generally have lower initial costs because they only require handheld scanners and barcode labels.

Best Use Cases

Pick-to-Light is best for:

• High-volume order fulfillment
• E-commerce warehouses
• Retail distribution centers
• Fast-moving SKU environments

Barcode Picking is best for:

• Smaller warehouses
• Lower order volumes
• Operations with large storage areas but fewer picks

Why Many Warehouses Are Combining Both Systems

Many modern warehouses are now using hybrid picking solutions.

For example:

• Pick-to-Light for fast-moving SKUs
• Barcode picking for slow-moving products

This approach allows warehouses to maximize efficiency while controlling system costs.

The Future of Warehouse Picking

As e-commerce continues to grow, warehouses are increasingly adopting technologies that improve speed and accuracy.

Pick-to-Light systems are becoming more attractive because of new compact designs, lower hardware costs, and easier deployment.

For operations that require high-speed order fulfillment, Pick-to-Light remains one of the most effective warehouse picking technologies available.