Abstract: A method and storage device for enabling a user to carry his or her computing environment with him, including an operating system, GUI preferences, applications, or data. Thus, a user can attach the storage device to a host computer and work on the host computer with its peripherals, while applying the parameters such as operating system and GUI preferences as stored on the device.

Abstract: A method and apparatus for securing digital data, and applications for securing multiple data items such as multiple files or messages exchanged between two communicating parties. The methods use a randomly created non-repetitive codec, with which the information to be encrypted is XORed. The codec is XORed with a user initial key, and the two results are concatenated. For securing multiple items, a master file is created comprising a number of keys, while the master file itself is encrypted with the initial key. A communication application enables a login-free communication between a client and a server, thus blocking intrusion attempts on the client side, and pishing attempts on the server side.