“The Apple logo is nearly a mirror”
Samy Kamkar bounces an invisible infrared laser off a laptop through a window and reconstructs what’s typed from the vibrations, with no view of the keyboard. It runs on a few thousand dollars of hardware, strobes 400,000 times a second, and the schematics go on GitHub. The laser microphone is a decades-old spy tool. Now anyone with a soldering iron gets the good version.