handsfree

Handsfree is a term describing devices and systems that enable operation without using one's hands. It encompasses technologies that substitute or augment manual input with voice, gestures, eye movement, or other distant control methods. The term can apply to consumer electronics, automotive systems, medical equipment, and industrial tools. The spelling varies: "hands-free" or "handsfree".

Common methods include voice control via speech recognition, head- or facial-gesture sensing, eye-tracking, foot pedals, and proximity sensing using accelerometers or capacitive sensors. Communication devices include hands-free telephony using speakerphones, Bluetooth headsets, and integrated car phone systems.

In vehicles, hands-free systems are often mandated or recommended to reduce driver distraction, with laws in several jurisdictions restricting the use of handheld devices while driving.

Security and privacy concerns include accidental activations, misinterpretation of commands, and data collection by voice assistants. Users may need to review permissions and implement privacy controls.

The concept has evolved from simple wired headsets to integrated, cloud-based systems that combine speech recognition with artificial intelligence to interpret intent and context. Ongoing research focuses on improving accuracy, reducing latency, and increasing robustness in noisy environments.