Why Use Infrared? The Unique Benefits of ListenIR for Privacy and Security

Summary

A maker's case for its infrared systems in rooms that need privacy, such as courtrooms, clinics, boardrooms and government buildings.

Key findings

• Claims infrared signals "cannot pass through walls, ceilings, or glass", so audio stays in the room where it is transmitted.
• Claims light-based transmission is immune to electromagnetic interference and gives clear audio in places crowded with radio traffic, because it uses no Wi-Fi, Bluetooth or radio signal.
• Recommends infrared for courtrooms and legal offices, hospitals and clinics, corporate boardrooms, and government and defence buildings.
• Says its receivers work with telecoil hearing aids through neckloops, and states that the system "Meets ADA (Americans with Disabilities Act) requirements".

Limits

Marketing by the maker of the products described, with no measurements. The glass claim differs from guidance that windows must be covered to keep infrared confidential (Compton-Conley 2015), and its interference-free claim is qualified by the maker's own 2022 manual, which says its infrared systems are not immune to sunlight and plasma displays. Last modified 14 April 2026 according to the page's metadata.

Read the original

www.listentech.com/secure-infrared-assistive-listening-listenir

Link checked 9 October 2026. We link to the original and do not host copies.

Cited in

• Which systems satisfy the ADA and building codes, and does a listener's own phone count?Disputed
• Auracast, hearing loop, infrared, RF or Wi-Fi: which suits which room?Disputed
• Where does infrared assistive listening work, and where does it fall short?Partly answered
• What works in courtrooms, council chambers and other meeting rooms where speech must be heard by all and kept in the room?Partly answered

Cite this source

The accessed date is when this library last checked the link; use the date you read it. To point readers to this summary instead, link to https://assistivelisteningknowledgebase.org/evidence/listen-2025-listenir-privacy/

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