Determining Key Shape from Sound

Its not yet very accurate or practical, but under ideal conditions it is possible to figure out the shape of a house key by listening to it being used. Listen to Your Key: Towards Acoustics-based Physical Key Inference Abstract: Physical locks are one of the most prevalent mechanisms for securing...

The Sounds a Key Make Can Produce 3D-Printed Replica

Security researchers have given a whole new meaning to “picking a lock,” demonstrating that they can use audio and signal-processing technology to listen to the sounds a key makes when it opens a lock and then 3D-print a duplicate from a recording. The attack, called SpiKey, leverages any basic...