High-Security Mechanical Locks: An Encyclopedic Reference

Practical Lock Picking: A Physical Penetration Tester's Training Guide

Keys to the Kingdom: Impressioning, Privilege Escalation, Bumping, and Other Key-Based Attacks Against Physical Locks

The Complete Book of Locks and Locksmithing, Seventh Edition (Mechanical Engineering)

How To Open Locks With Improvised Tools: Practical, non-destructive ways of getting back into just about everything when you lose your keys

Master Locksmithing: An Expert's Guide to Master Keying, Intruder Alarms, Access Control Systems, High-Security Locks... (P/L Custom Scoring Survey)

Modern High-security Locks: How To Open Them

Locksmithing, Second Edition (P/L Custom Scoring Survey)

Locksmith and Security Professionals' Exam Study Guide (P/L Custom Scoring Survey)