Computer monitors "leak" radio-waves. Security agencies have long been aware of this, working on standards like TEMPEST for shielding monitors so that their contents can't be sniffed through radio-interception. Now there's an open source project that does the reverse: Tempest for Eliza displays images on your screen that turn it into a short-range AM radio transmitter, letting you play computer-generated music on nearby AM radios.
All electronic devices send out eletromagnetic waves.so does your monitor. and your monitor does it all the time.and at very high frequencies. high enough for your short waveAM radio.
All you have to do is display the "correct" image on your screenand your monitor will emit the "right" signals.Tempest for Eliza displays pictures on your screen. one foreach note in the song.
LinkDiscuss (Thanks, Michael!)
