Fingerprint based smart phone user verification
AssigneeAMI Research & Development, LLC
InventorsJohn T. Apostolos, William Mouyos, Judy Feng, Dwayne T. Jeffrey
Life of this patent
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Abstract
A touch screen, now incorporated in most smart phones, presents an effective and transparent method to incorporate continuous active user verification schemes. The projected capacitive grid structure can be used to capture information, such as from the user's fingerprint. This information may be used to verify the user, or that a valid user currently has possession of the mobile device, even while the user is not consciously engaged in an active verification interface. Further processing, such as habitual gesture recognition, can augment the process.
Claims23
An apparatus for encoding information representative of a person's fingerprint comprising:
- a touchscreen array providing touchscreen sensor outputs from a plurality of touchscreen array elements;
- a sampler, connected to the touchscreen sensor outputs and generate one or more one-dimensional, time-varying signals as the person's finger passes adjacent a corresponding one of the touchscreen array elements as the person uses the touchscreen;
- and
- a digitizer, to digitize the one or more one-dimensional, time varying signals and generate one or more corresponding digital signals having a sequence of digital amplitude values, the resulting sequence of digital amplitude values in each digital signal, over time, being representative of a ridge and valley detail of a portion of the person's finger that passes adjacent the corresponding one of the touchscreen array elements as the person uses the touchscreen.
A method for encoding information representative of a person's fingerprint comprising:
- receiving one or more one-dimensional time-varying signals from elements of a touchscreen array as the person's finger passes adjacent a corresponding one of the elements of the touchscreen array;
- and
- digitizing the one or more one-dimensional time-varying signals to generate one or more corresponding digital signals, each digital signal comprising a time-based sequence of digital amplitude values, each sequence of digital amplitude values, over time, representative of a ridge and valley detail of a rectangular portion of the person's finger that passes adjacent the corresponding one of the touchscreen array elements as the person uses the touchscreen.
Dependencies are inferred from the claim text.