"French physicists have figured out how to rap on tabletops to communicate with CD's, lights or most other nearby electric or electronic devices. The inexpensive new technology has the potential to turn kitchen tables, desks, windows or other rigid surfaces into remote control panels with hundreds of touch-sensitive spots, reports The New York Times.
"The technology uses small inexpensive sensors [accelerometers] attached to the table or window to pick up the vibrations, which are sent to the audio input of the computer for analysis to reveal the exact location of each tap."
