Security Encryption

Even though cryptology and encryption is mainly thought of to encode a secret message it is also used as a means of property security.  This form of security is mainly used to protect against patented products so no one can copy the product and resell it for their own personal gain.  Encryptions such as these are used on DVD's and computer software.  There are layers of encryption on these products to protect the reproduction of the product.  That is why you can't copy a Disney movie or your Microsoft word software and give it to your friend unless of course you are a very talented hacker, and decrypter.