Chris Dangerfield runs UK BUMP KEYS and has sold lock bumping tools and picks for many years, as well as Open in Thirty Seconds, the book about Medeco locks written by Marc Tobias and Tobias Bluzmanis.

Chris did a detailed interview with Marc in 2024 about his new book, Tobias on Locks and Insecurity Engineering, published by Wiley. It is really an interesting interview that he conducted from Cambodia.

Listen to the interview here.