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Laser Sniffing Captures Typed Keystrokes From 50-100 Feet
Death Metal writes "Chief Security Engineer Andrea Barisani and hardware hacker Daniele Bianco used handmade laser microphone device and a photo diode to measure the vibrations, software for analyzing the spectrograms of frequencies from different keystrokes, as well as technology to apply the data to a dictionary to try to guess the words. They used a technique called dynamic time warping that's typically used for speech recognition applications, to measure the similarity of signals. Line-of-sight on the laptop is needed, but it works through a glass window, they said. Using an infrared laser would prevent a victim from knowing they were being spied on." (This is the same team that was able to pick up the electromagnetic signals emitted by PS/2 keyboards.)
Go back to Dvorak.
Sorry, the nerd in me speaks :p
The price is always right if someone else is paying.
It's "1337" not "l33t", noobtard.
"Using an infrared laser would prevent a victim from knowing they were being spied on."
An infrared laser would not "work through a glass window". Most glass is essentially opaque to infrared. That's why your car gets so hot in the summer... UV comes in, warms up the upholstery, but the IR emitted from the hot interior just reflects off the glass, back into the car.