Cryptology For Locksmiths 12+

📙 Locksmiths need to provide security for many aspects of their customers' and clients' business, including safe combinations and key numbering. This book prepares the locksmith to use cryptologic techniques to easily increase the security of the information while allowing them reasonable access to it when needed. Techniques include from the most basic to extensively layered systems, and include information from many authoritative sources, arranged and explained in an easy to read and understand manner.