Free-space gesture recognition for transaction security and command processing

• US 20030132974A1
• Filed: 01/15/2002
• Published: 07/17/2003
• Est. Priority Date: 01/15/2002
• Status: Active Grant

• Current Assignee: Snap, Inc.
• Original Assignee: International Business Machines Corporation
• Inventors: Bodin, William Kress
• Granted Patent: US 7,394,346 B2
• Time in Patent Office: Days
• US Class Current: 345/863
• CPC Class Codes: G06F 21/316 by observing the pattern of computer usage, e.g. typical user behaviour
• CPC Class Codes: G06F 3/017 Gesture based interaction, e.g. based on a set of recognized hand gestures interaction based on gestures traced on a digitiser G06F3/04883
• CPC Class Codes: G06F 3/0346 with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors

Abstract

A sensor panel having a matrix of independently decoded sensors, arranged in a two-dimensional pattern allows a consumer identification unit (CIDU) to detect a user-specific gesture made with a gesturing instrument such as an RF ID device. The CIDU monitors on a timed basis which of the sensors in the panel are receiving a signal from an RF ID device which has entered the proximity of one or more of the sensors. The user moves the sensor in a two-dimensional pattern to perform a “gesture signature” in free space near the panel, and the CIDU records the sequence of receiving sensors. This sequence can then be quickly and efficiently handled as a number to be looked up to identify and authenticate the user. Preferably, the user is allowed to define multiple signature gestures, each having the possibility of being associated with a transaction or authorization level.

Claims

1. A method for detecting a free-space gesture signature conducted with a gesturing instrument, said method comprising the steps of:

providing a plurality of gesturing sensors in a two-dimensional arrangement, each sensor being adapted to detect a gesturing instrument within a proximity of a sensor, each sensor having an independent detection event signal;

determining a sensor sequence from a series of sensor detection events responsive to movement of a gesturing instrument within the proximity of said plurality of sensors; and

correlating said sensor sequence to a predetermined sequence in order to authenticate a user of said gesturing instrument or to decode a command from said user.

2. The method as set forth in claim 1 wherein said step of determining a sensor sequence comprises applying timing analysis to said series of sensor detection events.

3. The method as set forth in claim 1 wherein said step of correlating said sequence to an authorized sequence further comprises authorizing a financial transaction.

4. The method as set forth in claim 1 wherein said step of correlating said sequence to an authorized sequence further comprises authorizing a physical security action.

5. The method as set forth in claim 4 wherein said step of authorizing a physical security action comprises unlocking a door.

6. The method as set forth in claim 4 wherein said step of authorizing a physical security action comprises allowing removal of a physical item from a controlled access area.

7. The method as set forth in claim 1 wherein said step of providing a plurality of gesturing sensors comprises providing an array of Radio Frequency Identification (RFID) sensors adapted to detect movement of RF ID devices.

8. The method as set forth in claim 1 wherein said step of providing a plurality of gesturing sensors comprises providing an array of acoustic sensors adapted to detect movement of acoustic-reflective gesturing instruments.

9. The method as set forth in claim 1 wherein said step of providing a plurality of gesturing sensors comprises providing an array of infrared (“

IR”

) sensors adapted to detect movement of gesturing instruments which are distinguishable by heat.

10. A computer readable medium encoded with software for free space gesture signature conducted with a gesturing instrument, said software causing a processor to perform the steps of:

receiving detection event signals from a plurality of gesturing sensors in a two-dimensional arrangement, each sensor being adapted to detect a gesturing instrument within a proximity of a sensor, each sensor having an independent detection event signal output;

determining a sensor sequence from a series of sensor detection events responsive to movement of a gesturing instrument within the proximity of said plurality of sensors; and

correlating said sensor sequence to a predetermined sequence in order to authenticate a user of said gesturing instrument or to decode a command from said user.

11. The computer readable medium as set forth in claim 10 wherein said software for receiving detection event signals from a plurality of gesturing sensors comprises software for applying timing analysis to said series of sensor detection events.

12. The computer readable medium as set forth in claim 10 wherein said software for correlating said sequence to an authorized sequence further comprises software for authorizing a financial transaction.

13. The computer readable medium as set forth in claim 10 wherein said software for correlating said sequence to an authorized sequence further comprises software for authorizing a physical security action.

14. The computer readable medium as set forth in claim 13 wherein said software for authorizing a physical security action comprises software for actuating a door lock.

15. The computer readable medium as set forth in claim 13 wherein said software for authorizing a physical security action comprises software for allowing removal of a physical item from a controlled access area.

16. The computer readable medium as set forth in claim 10 wherein said software for receiving detection event signals from a plurality of gesturing sensors comprises software for receiving signals from a plurality of Radio Frequency Identification (RFID) sensors adapted to detect movement of RF ID devices.

17. The computer readable medium as set forth in claim 10 wherein said software for receiving detection event signals from a plurality of gesturing sensors comprises software for receiving signals from a plurality of acoustic sensors adapted to detect movement of acoustic-reflective gesturing instruments.

18. The computer readable medium as set forth in claim 10 wherein said software for receiving detection event signals from a plurality of gesturing sensors comprises software for receiving signals from a plurality of infrared (“

IR”

) sensors adapted to detect movement of gesturing instruments which are distinguishable by heat.

19. A system for detecting a command or identifying value made by a user through a gesture signature conducted with a gesturing instrument, said system comprising:

a plurality of gesture sensors organized in a two-dimensional arrangement, each sensor having an independent detection event signal which is activated upon detection of a gesturing device within the proximity of a sensor;

a gesture recognition processor having a plurality of inputs for said independent detection event signals, and for performing the steps of;

determining a sensor sequence from a series of sensor detection events responsive to movement of a gesturing instrument within the proximity of said plurality of sensors; and

correlating said sensor sequence to a predetermined sequence in order to authenticate a user or decode a user command.

20. The system as set forth in claim 19 wherein said processor is adapted to apply timing analysis to said series of sensor detection events.

21. The system as set forth in claim 19 wherein said processor is adapted to perform financial transaction authorizations.

22. The system as set forth in claim 19 wherein said processor is adapted to control a physical security action.

23. The system as set forth in claim 22 wherein said processor is adapted to actuate a door lock.

24. The system as set forth in claim 22 wherein said processor is adapted to allow removal of a physical item from a controlled access area.

25. The system as set forth in claim 19 wherein said plurality of gesture sensors comprises an array of Radio Frequency Identification (RFID) sensors adapted to detect movement of RF ID devices.

26. The system as set forth in claim 19 wherein said plurality of gesture sensors comprises an array of acoustic sensors adapted to detect movement of acoustic-reflective gesturing instruments.

27. The system as set forth in claim 19 wherein said plurality of gesture sensors comprises an array of infrared (“

IR”

) sensors adapted to detect movement of gesturing instruments which are distinguishable by heat.