The really "scary" talk about keys is:

Copying Keys from Photos, Molds & More
Presenter: Deviant Ollam
From Wild West Hackin' Fest 2018 in Deadwood, SD.
[www.youtube.com]

A intriguing and shorter talk is:

Confessions of a Nespresso Money Mule
Nina Kollars DEF CON 27 Conference, Nov. 15, 2019
[www.youtube.com]

Yours,

Paul H.

"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)