Robot cracks open safe live on Def Con's stage

Re:Robot cracks open safe live on Def Con's stage by Animats on Saturday July 29, 2017 @02:14AM (#14879807)

Here's a commercial version. [1]

This seems to be an exhaustive-search combination lock solver. Someone else has built one that not only manipulates the lock, but uses a contact microphone to listen to it. But I can't find the reference.

[1] https://www.youtube.com/watch?v=fIavLorioys

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Re:Robot cracks open safe live on Def Con's stage by themcaffee on Saturday July 29, 2017 @02:26AM (#14879851)

A key element of this is it's ability to limit the amount of possible combinations from 1 million to about 1000 due to small flaws in the dials. A contact microphone might be able to even further reduce this search space in combination with the existing exploits.

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Re:Robot cracks open safe live on Def Con's stage by Animats on Saturday July 29, 2017 @02:35AM (#14879877)

There are Sergeant and Greenleaf locks with a half-digit tolerance, so you have to get the number exactly right. They're not popular, because they're such a pain to use.

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Re:Robot cracks open safe live on Def Con's stage by blacksmythe on Saturday July 29, 2017 @12:13PM (#14881849)

  >> half-digit tolerance

I assume you mean <0.5digit tolerance.

There is a big difference between 0.55digit tolerance (might be able to try two numbers at once with enough mechanical precision to the solver) and 0.45digit tolerance.

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