In the movie WarGames (1983) with Matthew Broderick used a Dictaphone to record the tones from a key pad lock on the door. The general idea was also mentioned in the movie Hackers (1995) and many other movies, just how unrealistic is this?
I don't measure a man's success by how high he climbs but how high he bounces when he hits bottom.
--General George S. Patton