Mobile device for storing digital data

1. A mobile device that stores digital data, comprising:

a data storage space;

an interface that connects the mobile device to a second device;

means, stored in the data storage space, for providing an overall view of all files and any accompanying directories stored in said storage space to the second device when said mobile device is connected via said interface to the second device, on condition that an authorized user of said mobile device carries out an authentication with said mobile device; and

means, stored in the data storage space, for providing, when said mobile device is connected via said interface to the second device and the authorized user has not carried out the authentication with said mobile device, a view of a guest storage space that simulates a partial view of said storage space and that consists of a sub-set of said files and any accompanying directories of said storage space, while preventing access by said second device from said overall view,

the sub-set of said files and any accompanying directories of the partial view being selected in accordance with a model created by the authorized user, said model stored on the mobile device and identifying said files and any accompanying directories of the partial view made available via the guest storage space.

2. The mobile device as claimed in claim 1 , further comprising:

an onboard sub-system, stored in the data storage space that simulates one or more guest storage spaces on a data bus; and

authentication means for authenticating the authorized user with said mobile device.

3. The mobile device as claimed in claim 2 , wherein said host storage space is one selected from the group consisting of: flash memory, a hard disk, and a mobile phone.

4. The mobile device as claimed in claim 2 , wherein said authentication means is at least one selected from the group consisting of: a digital keypad, a fingerprint reader, a communication on said bus, an identification of the computer, and an application using a user interface of a mobile phone, said user interface being either of a keypad of the mobile phone or a screen of the mobile phone.

5. The mobile device as claimed in claim 2 , further comprising:

configuration means, stored in the data storage space, that carries out configuration adjustments.

6. The mobile device as claimed in claim 1 , further comprising:

encryption means, stored in the data storage space, that encrypts data stored in said mobile device.

7. The mobile device as claimed in claim 3 , wherein said authentication means is at least one selected from the group consisting of: a digital keypad, a fingerprint reader, a communication on said bus, an identification of the computer, and an application using a user interface of a mobile phone, said user interface being either of a keypad of the mobile phone or a screen of the mobile phone.

8. The mobile device as claimed in claim 1 , further comprising:

configuration means, stored in the data storage space, that carries out configuration adjustments.

9. The mobile device as claimed in claim 2 , wherein data stored in said mobile device are encrypted by virtue of encryption means.

10. The mobile device as claimed in claim 1 , wherein said guest storage space is separate from said storage space.

11. The mobile device as claimed in claim 1 , wherein said guest storage space is managed separately from the storage space by means of the model.

12. The mobile device as claimed in claim 1 , further comprising:

configuration means, stored in the data storage space, that, for the authorized user who has carried out the authentication with said mobile device, does any of create, modify, and destroy one or more models for making one or more sub-sets of said files and any accompanying directories stored in said storage space available in one or more guest storage spaces.

13. The mobile device as claimed in claim 12 , wherein the configuration means, for the authorized user who has carried out the authentication with said mobile device, does any of create, destroy, and modify a size of the one or more guest storage space.

14. The mobile device as claimed in claim 12 , wherein the sub-set of said files and any accompanying directories of the partial view is made available by the model to a non-authorized user from the storage space via a copy-on-write mechanism operating on the mobile device.