Abstract: Methods directed to computer disaster recovery and prevention using virtual machine and related technologies. Storage is reduced in disaster recovery dress rehearsal and testing simplified by using copy-on-write and redirection of intercepted reads and writes. Disasters arising from program changes are prevented by comparison and analysis of intercepted calls to previously unknown behavior scripts. A high level of data security is achieved by preventing transmission, copying, or storage of unencrypted forms.

Abstract: A method for playing bingo like games utilizing a small sequence of essentially random play numbers applied to a matrix to generate a relatively large quantity of call numbers to cover patterns on one or more game cards.