A computer scientist at the National University of Singapore claims to have demonstrated how recording the sound of a lock turning can be sufficient to make working replica keys.
In March 2020, Soundarya Ramesh, a third-year PhD candidate at the National University of Singapore, published a paper [PDF] co-authored by security researcher Harini Ramprasad and Professor Jun Han on the topic of "acoustics-based physical key inference".
"Since March, we have heard back from a security company that was interested in converting our research into a product, and also an amateur lockpicker who wanted to improve upon our initial idea," Ramesh told The Register.
The paper presents "SpiKey, a novel attack that utilizes a smartphone microphone to capture the sound of key insertion/withdrawal to infer the shape of the key, i. ..
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