BAS Message
February 2021

The sound of a key sliding into a lock could be enough information to potentially create a copy of that key and open the lock – that's the conclusion of researchers who've been investigating "acoustics-based physical key inference".

It makes sense, if you think about it: the clicks and clacks of a key pushed into a pin tumbler lock actually reveal the mechanism within, if you can slow down, isolate, and analyse the sounds with enough accuracy.

Pulling off a trick like this would need a lot of work and equipment, and would probably end up being more hassle than learning how to pick the lock in the traditional way - but it's an intriguing and unusual security loophole to ponder.

email me here


The Boston Audio Society
PO BOX 260211
Boston MA 02126

problems? email Barry:

updated 2/11/21