Method for generating and using composite scene passcodes

• US 20100169958A1
• Filed: 10/15/2007
• Published: 07/01/2010
• Est. Priority Date: 10/13/2006
• Status: Abandoned Application

• Current Assignee: University of Idaho
• Original Assignee: University of Idaho
• Inventors: Johnson, Korey R., Caltagirone, Sergio P., Werner, Steffen
• Application Number:
  US12/311,304
• Publication Number:
  US 20100169958A1
• Time in Patent Office: Days
• US Class Current: 726/6
• CPC Class Codes: G06F 21/36 by graphic or iconic representation

Abstract

One disclosed embodiment for creating a composite scene passcode comprises presenting a system-generated composite scene passcode to a user, allowing the user to generate a composite-scene passcode by selecting one scene element per scene dimension, or allowing the user to enter an alphanumeric password that encodes the composite scene passcode. Certain embodiments also comprise combining the passcode with an alphanumeric password. The composite scene may be two dimensional, three dimensional, or greater than three dimensions, and/or the scene may be animated. A computer system using a composite scene passcode also is disclosed. One embodiment of the system comprises a display for displaying a composite scene passcode or plural scene dimensions for generating the composite scene passcode. Authentication may comprise using scene elements arranged categorically and requiring the user to select the correct scene element from among distracter elements within the same category. The system may also include an input device.

Claims

1. A process for creating a composite scene passcode, comprising presenting a system-generated composite scene passcode to a user, allowing the user to generate a composite scene passcode by selecting at least one scene element per scene dimension, where the user'"'"'s resulting customized composite scene passcode is later presented to the user, or allowing the user to enter an alphanumeric password that determines a composite scene passcode which is later presented and uniquely identifies the alphanumeric password.

2. The method according to claim 1 further comprising presenting the user one or more sets of potential scene elements for each scene dimension, and allowing the user to choose at least one scene element for each dimension.

3. The method according to claim 1 where a random string of n characters forms the password, with each of the characters representing a choice out of a set of all possible characters at the particular position within the string.

4. The method according to claim 3 where the password is translated into the composite scene passcode by mapping alphanumeric elements of the password to corresponding scene elements.

5. The method according to claim 1 further comprising combining the passcode with an alphanumeric password.

6. The method according to claim 1 where the scene elements are further conditionally related to another scene dimension.

7. The method according to claim 1 further comprising placing individual scene elements into a multidimensional composite scene at predefined locations within the composite scene, where stored or inferred dependencies between scene elements and scene element placement constraints are applied.

8. The method according to claim 7 where placement, location, size, orientation, and/or particular instantiation of scene elements are determined by stored or inferred constraints via constraint satisfaction algorithm.

9. The method according to claim 1 further comprising placing individual scene elements into a three dimensional scene at locations and orientations within the scene according to stored or inferred dependencies between scene elements and the scene is rendered from one or multiple different viewpoints to provide the composite scene passcode.

10. The method according to claim 9 where placement, location, size, orientation, viewpoint, and/or particular instantiation of scene elements are determined by a constraint satisfaction algorithm.

11. The method according to claim 1 further comprising accompanying presentation of the composite scene passcode with other techniques designed to facilitate passcode retention.

12. The method according to claim 11 where presentation of the composite scene is accompanied by a presentation of spatially or temporally separated scene elements that need to be remembered.

13. The method according to claim 1 further comprising:

generating an alphanumeric password; and

presenting the alphanumeric password either synchronously or sequentially with the composite scene.

14. The method according to claim 13 where all or a subset of the composite scene passcode uniquely identifies all or a subset of the alphanumeric password.

15. The method according to claim 13 where each scene element in each scene dimension corresponds to a unique character in the alphanumeric password.

16. The method according to claim 1 further comprising

entering of a user identification by the user;

and

presenting a composite scene password challenge by a system, where the system iteratively moves through at least one of the n* dimensions of the passcode presenting image elements, the user selects image elements that form a concatenated composite scene passcode, and the concatenated passcode is checked against at least part of a stored passcode associated with the user.

17. The method according to claim 13 further comprising using a composite scene passcode recognition process to regenerate all or a portion of the alphanumeric password, where the user can complete the alphanumeric password at any time during the process without further presentation of additional scene dimensions or scene elements.

18. The method according to claim 1 where allowing the user to generate a composite scene passcode further comprises:

presenting to the user visual elements for each scene dimension used to compose a passcode;

allowing the user to randomly select at least one element for each scene dimension; and

assembling a contextual image passcode using elements selected by the user for each scene dimension presented.

19. The method according to claim 1 further comprising:

displaying a plurality of scene elements for each scene dimension to a user;

requiring the user to select at least one of the plurality of scene elements included in the composite scene or to enter an alphanumeric password that corresponds to the composite scene;

comparing the composite scene or alphanumeric password entered by the user to a stored passcode; and

permitting user access to the system when an entered passcode is identical or substantially identical to a stored passcode for that user.

20. A method for screening access to a system, comprising:

allowing the system or a user to generate a graphical passcode;

allowing the system or user to generate an alphanumeric password; and

generating a mapping between the graphical passcode and the alphanumeric passcode.

21. The method according to claim 20 further comprising requiring the user to enter both the graphical passcode and the alphanumeric password to gain access to the system.

22. The method according to claim 20 where the system is a computer system, automatic teller machine, business access control, cell phone, handheld electronic device, network, or an Internet-based system or service.

23. A method for screening access to a system, comprising:

generating a graphical passcode comprising plural elements;

presenting a plurality of image elements in at least one categorical authentication grid to a user;

selecting image elements that form a graphical passcode; and

comparing the selected passcode elements with a stored passcode.

24. A program stored on at least one machine readable medium for protecting user access to a computer, document, or interne site using a passcode, comprising:

a code segment that displays to a user a composite image comprising a plurality of scene elements;

a code segment that requires the user to select scene elements included in the composite image;

a code segment that compares a passcode entered by the user with a stored passcode; and

a code segment that permits user access when the entered passcode is identical to or substantially identical to the stored passcode.

25. A system, comprising:

a display for displaying a composite scene passcode or plural scene elements for generating the composite scene passcode;

an input device used by a user to input image selection useful for compositing a composite scene passcode, for entering the selections into memory and for reentering the passcode to obtain access to the system; and

a program that uses a composite scene passcode to control user access to some feature, file, element, or functionality of the system.