If you use Tango to store credit card information, you should read this. Tango V4.35 encrypts customer credit card information to protect it against fraudulent use. This is done via “Encryption Keys”. Each Tango database has its own set of keys. If you have several Tango databases, you will have several sets of keys. Without these keys, the information is unreadable and unuseable. Keys can only be moved from one server to another if you have an “Encryption Key Backup File”.