Lamphone - Passive Sound Recovery from a Desk Lamp's Light Bulb Vibrations

Explore a groundbreaking optical side-channel attack called "Lamphone" in this 15-minute conference talk from USENIX Security '22. Discover how researchers from Ben-Gurion University of the Negev and Weizmann Institute of Science exploit minute vibrations in desk lamp light bulbs to passively recover sound and speech. Learn about the physical phenomenon behind this technique, its comparison to existing methods, and its potential implications for privacy in home office settings. Gain insights into the Lamphone's threat model, performance at various distances and sound levels, and its ability to recover speech from virtual meetings with fair intelligibility from up to 35 meters away.

Intro
A Light Bulb as a Microphone?
Related Eavesdropping Research
Limitations of Existing Methods
Lamphone's Threat Model
The Physical Phenomenon
OAT Algorithm
Comparison to Visual Microphone
The influence of the Distance on Lamphone's Performance
The influence of Sound Level and Distance on Lamphone's Performance
Takeaways