This text provides an overview and practical guide to the locksmith profession. It begins with an introduction by Steve Lasky, editor and vice-president of publishing for "Security Technician Magazine" and "Locksmith Ledger International". Part One discusses the business, including how to train for it, become employed, find a niche and advance toward higher certification. Part Two is a skill-building reference, focusing on techniques and technologies in this trade. Coverage includes how to set up a small, one-person shop, outfit the business, masterkey locks, perform emergency services and use locksmithing software. Appendices provide references to locksmithing terms, training, associations, suppliers and publications.