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This must be an old paper. No visible date. (Put a date in your PDF file, please. The papers are not being delivered bound into a magazine or proceedings any more.) People have been 3D printing keys for years.[1][2]

Most of that is overkill. If it's just a pin-tumbler lock, simple picking techniques will usually work.

[1] https://www.youtube.com/watch?v=cexGEYxoMe0

[2] https://www.instructables.com/How-to-make-a-3D-printed-keyFU...

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That's what metadata is for! Created and modified: 7/21/15.

"woot15" in the pathname may also be a clue for us: https://www.usenix.org/conference/woot15

tptacek is listed as co-chair and committee member. Hi there!

Metadata is often stripped out or mangled, though, so including the date in the document itself is still a useful thing to do.

having the key and/or at least the ability to quickly make a key is far quicker than picking and much better if you are intending on being surreptitious. It also aids in less forensic evidence behind.

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