User Identification with Biokinematic Input

• US 20140026212A1
• Filed: 09/19/2013
• Published: 01/23/2014
• Est. Priority Date: 12/29/2010
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Geiger, Avi R., Berkes, Otto
• Granted Patent: US 8,856,543 B2
• Time in Patent Office: Days
• US Class Current: 726/19
• CPC Class Codes: G06F 21/32 using biometric data, e.g. fingerprints, iris scans or voiceprints
• CPC Class Codes: G06F 2203/04808 Several contacts: gestures triggering a specific function, e.g. scrolling, zooming, right-click, when the user establishes several contacts with the surface simultaneously; e.g. using several fingers or a combination of fingers and pen
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text
• CPC Class Codes: G06V 40/10 Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands

Abstract

Systems and methods for user identification based on biokinematic input are disclosed herein. The system may include a multi-touch sensitive display including a sensor configured to receive biokinematic input including data representing detected positions of digit touches made by digits of a user, in each of a series of successive time intervals during a defined identification gesture. The system may further include a user identification module executed by a processor of the computing device. The user identification module may be configured to receive the biokinematic input from the sensor, and to compare relative positions of the digit touches and/or relative rates of change in said positions of the digit touches to a stored user template of verified biokinematic data for the user. If a match is determined, an indication that the user has been successfully identified may be displayed.

Claims

1. A computer-implemented method, comprising:

receiving user biokinematic input of an identification gesture including one or more digit touches made by a corresponding one or more digits of a user via a multi-touch sensitive display of a computing device;

comparing the received user biokinematic input to a stored user template of verified biokinematic data for the user, the stored user template generated from user identifying features extracted from previous biokinematic input associated with the user, the user-identifying features including at least one of an outline of the user'"'"'s hand or a centroid of one or more previous digit touches made by a corresponding one or more digits of the user; and

displaying an indication on the display that the user has been successfully identified if a match is determined by the comparing.

2. The computer-implemented method of claim 1, wherein the user biokinematic input of the identification gesture includes at least one palm touch.

3. The computer-implemented method of claim 2, wherein the identification gesture is a palm-fist transition gesture.

4. The computer-implemented method of claim 1, wherein the receiving, the comparing, and the displaying are performed during a user authentication operation on the computing device.

5. The computer-implemented method of claim 4, wherein the user authentication is implemented during login of the user to a user session on the computing device.

6. The computer-implemented method of claim 5, wherein the indication is a message outputted to the display after a successful user login operation, or the indication is cessation of a login screen being displayed to the user and access being granted to a program, file, or operating system on the computing device.

7. The computer-implemented method of claim 1, wherein the computing device comprises one of a personal computer, desktop computer, tabletop computer, kiosk computer, mobile phone, tablet computing device, or laptop computer.

8. A computer-readable storage medium comprising instructions stored thereon that, responsive to execution by a processor, perform operations comprising:

receiving user biokinematic input of an identification gesture including a plurality of digit touches made by a corresponding plurality of digits of a user, in each of a series of successive time intervals, via a multi-touch sensitive display of a computing device;

comparing respective positions and respective rates of change in said positions of the plurality of digit touches during at least a portion of the identification gesture in the biokinematic input to a stored user template of verified biokinematic data for the user, the stored user template generated from user identifying features extracted from previous biokinematic input associated with the user; and

displaying an indication on the display that the user has been successfully identified if a match is determined by the comparing.

9. The computer-readable storage medium of claim 8, wherein the user biokinematic input of the identification gesture includes at least one palm touch.

10. The computer-readable storage medium of claim 9, wherein the identification gesture is a palm-fist transition gesture.

11. The computer-readable storage medium of claim 10, wherein the operations further comprise measuring the respective positions and/or rates of change in said positions of the plurality of digit touches relative to the at least one palm touch during the palm-fist transition gesture, and comparing these measured respective positions and/or rates of change to the stored user template to determine whether a match exists.

12. The computer-readable storage medium of claim 8, wherein the receiving, the comparing, and the displaying are performed during a user authentication operation on the computing device.

13. The computer-readable storage medium of claim 12, wherein the user authentication is implemented during login of the user to a user session on the computing device.

14. The computer-readable storage medium of claim 13, wherein the indication is a message outputted to the display after a successful user login operation, or the indication is cessation of a login screen being displayed to the user and access being granted to a program, file, or operating system on the computing device.

15. The computer-readable storage medium of claim 8, wherein the computing device comprises one of a personal computer, desktop computer, tabletop computer, kiosk computer, mobile phone, tablet computing device, or laptop computer.

16. A computing device, comprising:

a multi-touch sensitive display including a sensor configured to receive biokinematic input including data representing detected positions of one or more digit touches made by a corresponding one or more digits of a user, in each of a series of successive time intervals during a defined identification gesture;

a user identification module executed by a processor of the computing device, the user identification module being configured to receive the biokinematic input from the sensor, the user identification module including;

a feature extractor configured to, in a registration phase, receive a first biokinematic input from the sensor and extract user-identifying features from the first biokinematic input, the first biokinematic input comprising relative positions of the one or more digit touches and/or relative rates of change in said positions of the one or more digit touches, and the user-identifying features including at least one of an outline of the user'"'"'s hand or a centroid of one or more of the digit touches; and

a template generator configured to generate a user template including the user-identifying features and store the user template in a data store.

17. The computing device of claim 16, wherein the one or more digit touches of the identification gesture include at least one palm touch.

18. The computing device of claim 17, wherein the identification gesture is a palm-fist transition gesture.

19. The computing device of claim 16, wherein the sensor is a capacitive multi-touch sensor.

20. The computing device of claim 16, wherein the computing device comprises one of a personal computer, desktop computer, tabletop computer, kiosk computer, mobile phone, tablet computing device, or laptop computer.