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What is voice-assisted picking?

In voice-assisted picking – often referred to as Voice Picking or Pick-by-Voice – the warehouse management system communicates with the picker through a spoken dialogue. A wearable voice computer converts system instructions into spoken commands and processes the employee's spoken responses in real time. Typically, the system announces the destination, storage location, and pick quantity; the employee confirms the pick by speaking a check digit displayed on the shelf. This keeps both hands free and eliminates the need to shift attention between paper, scanner, or screen.

How does the process work in practice?

The foundation is a speech recognition model that is either trained to an individual user or speaker-independent. Modern systems are increasingly speaker-independent, significantly reducing the training effort required for new hires or seasonal workers. The voice computer – usually a ruggedized device designed for warehouse use – connects to the WMS via Wi-Fi or DECT. Order management remains fully within the WMS; the voice system handles only the dialogue layer.

The following use cases are particularly common in practice:

• Manual picking in conventional shelving systems with high pick frequencies
• Food logistics, where gloves and cold-protection clothing make scan-based solutions difficult
• Spare parts and retail warehouses with high volumes of small orders
• Combined methods, where Voice is supplemented by barcode scanning or Pick-by-Light

The combination of Voice with other assisted picking methods – known as multimodal solutions – is gaining traction, as it unites the strengths of different technologies without having to fully accept the drawbacks of any single approach.

What should you look for when selecting a solution?

Several factors should be considered when making a technology decision, and their relative importance will vary depending on the operation:

• WMS integration: Seamless connectivity to the existing warehouse management system is critical; proprietary interfaces can make switching vendors more difficult later on.
• Language packs and multilingual support: In international workforces, the system must support multiple languages, which has implications for licensing and configuration.
• Hardware robustness: Devices must be suitable for use in cold stores, dusty environments, or under physical strain.
• Ergonomics: Headset comfort, volume levels, and wear duration significantly affect employee acceptance and wellbeing.
• Error handling: How the system deals with unrecognized voice commands or background noise varies considerably between vendors.

Voice Picking should be distinguished from Pick-by-Light, which uses optical signals on the shelf to guide pickers, as well as from purely scan-based methods. These approaches are not mutually exclusive and are frequently combined in modern warehouses.