Hackers can use ordinary bulbs to spy on conversations 80 feet away: Researchers

Hackers can use ordinary light bulbs to spy on people's conversations from over 80 feet away by analysing the vibrations on the surface of the bulb created by soundwaves, researchers from Israel said. An analog-to-digital converter makes the conversion from electrical to digital information, they said. The researchers developed an algorithm for the attack method, which they named 'Lamphone'.