Google, IBM & Meta Certificates — All 10,000+ Courses at 40% Off
One annual plan covers every course and certificate on Coursera. 40% off for a limited time.
Get Full Access
Learn how to identify what a target is typing from a distance through a window using an advanced laser microphone in this 36-minute conference talk. Discover the process of converting infrared signals to vibrations to radio waves and back to sound for sophisticated eavesdropping operations. Explore the electrical, optical, radio, and software components required to build cutting-edge surveillance equipment capable of remote keystroke detection through optical methods.
