Abstract: Methods of verifying a genuine presence and identity of a user of a mobile device include analyzing a stream of data from sensors of the mobile device over a period spanning a user press of a button displayed on a touch screen of the device. Results of the analysis are used to distinguish a genuine user button press from a simulated event generated by device emulation software or other simulation tool. The presence and identity verification are determined in part by the results of the sensor stream analysis, optionally in conjunction with an analysis of biometric data captured by the mobile device when the press of a button on the device touch screen has been elicited. The biometric data may include capture of imagery of a user face or body part by a camera of the mobile device.

Abstract: Systems, methods, and computer program products provide near real-time feedback to a user of a camera-enabled device to guide the user to capture self-imagery when the user is in a desired position with respect the camera and/or the display of the device. The desired position optimizes aspects of self-imagery that is captured for applications in which the imagery is not primarily intended for the user's consumption. One class of such applications includes applications that rely on illuminating the user's face with light from the device's display screen. The feedback is abstracted to avoid biasing the user with aesthetic considerations. The abstracted imagery may include real-time cartoon-like line drawings of edges detected in imagery of the user's head or face.

Abstract: Methods, systems, and computer program products for authenticating an online user. Authentication involves sending a code from a server to a user device equipped with a source of illumination and a camera capable of capturing video imagery of the online user. The user device receives the code, modulates the source of illumination in accordance with the code, and captures video imagery of the user while the source of illumination is being modulated according to the code. The captured video imagery of the online user is sent to the server where it is analyzed to detect evidence of changes in illumination that correspond to the code. If good correspondence is found, the user may be authenticated. Similar methods may be applied to other biometric data. Applications of the authentication include identify validation, pseudonym verification, and distinguishing human from non human access attempts.

Abstract: Methods, systems, and computer program products for authenticating an online user. Authentication involves sending a code from a server to a user device equipped with a source of illumination and a camera capable of capturing video imagery of the online user. The user device receives the code, modulates the source of illumination in accordance with the code, and captures video imagery of the user while the source of illumination is being modulated according to the code. The captured video imagery of the online user is sent to the server where it is analyzed to detect evidence of changes in illumination that correspond to the code. If good correspondence is found, the user may be authenticated. Similar methods may be applied to other biometric data. Applications of the authentication include identify validation, pseudonym verification, and distinguishing human from non human access attempts.

Abstract: Methods, systems, and computer program products for authenticating an online user. Authentication involves sending a code from a server to a user device equipped with a source of illumination and a camera capable of capturing video imagery of the online user. The user device receives the code, modulates the source of illumination in accordance with the code, and captures video imagery of the user while the source of illumination is being modulated according to the code. The captured video imagery of the online user is sent to the server where it is analyzed to detect evidence of changes in illumination that correspond to the code. If good correspondence is found, the user may be authenticated. Similar methods may be applied to other biometric data. Applications of the authentication include identify validation, pseudonym verification, and distinguishing human from non human access attempts.