Abstract: The present disclosure generally relates to a method of authenticating a user, using an electronic device comprising a fingerprint sensor, and more specifically to improvements in relation to how to acquiring an authentication fingerprint image for use in authenticating the user. The present disclosure also relates to a corresponding electronic device and to a computer program product.

Abstract: An acoustic biometric imaging system comprising: a transparent device member having a first face to be touched by a finger surface of a user, and a second face opposite the first face, the transparent device member having a first acoustic impedance; a first ultrasonic transducer acoustically coupled to the second face of the transparent device member in a first transducer region for receiving acoustic signals conducted by the transparent device member from a finger touch region laterally spaced apart from the first transducer region, the first ultrasonic transducer having a second acoustic impedance; and an opaque masking layer arranged between the transparent device member and the first ultrasonic transducer in the first transducer region, the opaque masking layer having a third acoustic impedance between the first acoustic impedance and the second acoustic impedance.

Abstract: A method for manufacturing a fingerprint sensor device. The method comprises providing a fingerprint sensor chip, arranging the fingerprint sensor chip on a carrier, depositing a cover layer on the fingerprint sensor chip, the cover layer comprising a polarizable material; moving a top electrode into contact with a top surface of the cover layer; and applying a voltage between the top electrode and a bottom electrode located below the cover layer and comprised in a material stack between the bottom of the carrier and the cover layer, creating an electric field in the cover layer, thereby poling the cover layer such that a dielectric constant of the cover layer in a direction perpendicular to the sensing array is higher than a dielectric constant in a direction parallel to the sensing array, thereby forming a cover layer having an anisotropic dielectric constant.

Abstract: A fingerprint sensing system comprising a plurality of conductive selection lines; a plurality of conductive read-out lines crossing the selection lines; selection circuitry controllable to provide a selection signal on at least one selected selection line in the plurality of selection lines; a plurality of pixel elements formed at intersections between the selection lines and the read-out lines; a reference signal source configured to provide a reference signal; and read-out circuitry coupled to each read-out line in the plurality of read-out lines and to the reference signal source, the read-out circuitry being configured to acquire a read-out signal via a read-out line connected to a selected pixel element, when the selected pixel element provides the sensing signal; acquire a reference signal from the reference signal source; form a corrected read-out signal for the selected pixel element based on the read-out signal and the reference signal; and provide corrected read-out signals.

Abstract: There is provided a biometric imaging device configured to be arranged under an at least partially transparent display panel and configured to capture an image of an object in contact with an outer surface of the display panel. The biometric imaging device comprises: an image sensor comprising a photodetector pixel array; a transparent substrate arranged to cover the image sensor; an opaque layer covering an upper surface of the transparent substrate, wherein the opaque layer further comprises a plurality of separate openings; and a plurality of microlenses, each microlens being arranged in alignment with a respective opening of the opaque layer; wherein each microlens is configured to redirect light through the transparent substrate and onto a subarray of pixels in the photodetector pixel array.

Abstract: There is provided a display arrangement comprising an ultrasonic biometric sensing device. The display arrangement comprises: a cover plate having a sensing surface configured to be touched by a finger; a display panel comprising a plurality of sub-layers; a plurality of ultrasonic transducers arranged along the periphery of the display arrangement and outside of an active display area of the display arrangement, each ultrasonic transducer comprising a top and bottom electrode; and ultrasonic transducer control circuitry to control the ultrasonic transducers to determine properties of an object in contact with the sensing surface. One of the sub-layers in the display panel comprises a protruding portion extending outside of an area of any other sub-layer located between the sub-layer comprising the protruding portion and the cover plate, and the plurality of ultrasonic transducers are arranged on the protruding portion between the protruding portion and the cover plate.

Abstract: The present disclosure relates to a method of authenticating a user by means of an electronic device comprising a user output interface. The present disclosure also relates to a corresponding electronic device and to a computer program product.

Abstract: There is provided a fingerprint sensing module comprising a fingerprint sensor device having a sensing array arranged on a first side of the device, the sensing array comprising an array of fingerprint sensing elements. The fingerprint sensor device also comprises connection pads for connecting the fingerprint sensor device to external circuitry. The fingerprint sensing module further comprises a fingerprint sensor device cover structure arranged to cover the fingerprint sensor device, the cover structure having a first side configured to be touched by a finger, thereby forming a sensing surface of the sensing module, and a second side facing the sensing array, wherein the cover structure comprises conductive traces for electrically connecting the fingerprint sensor module to external circuitry, and wherein a surface area of the cover structure is larger than a surface area of the sensor device.

Abstract: A fingerprint sensing module comprising a fingerprint sensor device having a sensing array arranged on a first side of the device, the sensing array comprising an array of fingerprint sensing elements. The fingerprint sensor device comprises connection pads for connecting to external circuitry. The fingerprint sensing module further comprises a fingerprint sensor device cover structure, arranged to cover the fingerprint sensor device, having a first side configured to be touched by a finger, thereby forming a sensing surface of the sensing module, and a second side facing the sensing array, wherein the cover structure comprises conductive traces for electrically connecting the fingerprint sensor module to external circuitry, and wherein a surface area of the cover structure is larger than a surface area of the sensor device. The fingerprint sensor device comprises wire-bonds electrically connecting the connection pads of the fingerprint sensing device to the conductive traces of the cover structure.

Abstract: In an aspect of the invention, a network node configured to enable authentication of a user of a client device based on biometric data captured by the client device is provided, which network node receives a request to authenticate a user of a client device, the authentication request comprising a user identifier, fetch at least one set of enrolled transformed biometric data corresponding to the user identifier and a secret feature transform key with which the biometric data was transformed at enrolment of the transformed biometric data at the network node, and submit the transformed biometric data and the secret feature transform key over a secure communication channel to the client device.

Abstract: The present disclosure relates to an electronic device comprising at least a first and a second biometric sensor arrangement, wherein the second biometric sensor arrangement being different from the first biometric sensor arrangement. The present disclosure also relates to a method for enrolling a user of such an electronic device and to a corresponding computer program product.

Abstract: The invention relates to a method of a fingerprint sensing system of enabling suppressing impairment data present in an image captured by a fingerprint sensor of the fingerprint sensing system, and a fingerprint sensing system performing the method.

Abstract: The present disclosure relates to a method of controlling an electronic device, the electronic device comprising a fingerprint sensor. The present disclosure also relates to a corresponding electronic device and to a computer program product.

Abstract: The invention relates to methods and devices for enabling authentication of a user based on biometric data. In an aspect of the invention a method performed by a trusted network node is provided for enabling authentication of a user of a second client device based on biometric data captured by a first client device.

Abstract: A biometric imaging arrangement comprising: a photodetector pixel array including at least a first portion of pixels arranged to receive light transmitted from a spectral filter with a spectral transmission band and at least a second portion of pixels arranged to receive light not transmitted from the spectral filter, wherein the biometric imaging arrangement is configured to acquire an image of an object and perform user authentication at least partly based on, in the acquired image, a relationship between the intensity of light received by the first portion of pixels and the intensity of light received by the second portion of pixels.

Abstract: The present disclosure relates to methods and devices for fingerprint recognition. In an aspect, a method of a fingerprint sensing system of extracting at least one fingerprint descriptor from an image captured by a fingerprint sensor for enrolment in the fingerprint sensing system is provided. The method comprises capturing images of a finger contacting the fingerprint sensor, detecting at least one fingerprint feature in each captured image, extracting fingerprint data from an area surrounding a location of the detected feature in each captured image, and extracting a fingerprint descriptor by performing a transform of the fingerprint data extracted from the area surrounding the location of the detected feature in each captured image, wherein a size of the area is selected such that the area comprises sufficient information to allow a duplicated descriptor to be discarded for the captured images.

Abstract: The present disclosure relates to a method of authenticating a user by means of an electronic device comprising a user output interface. The present disclosure also relates to a corresponding electronic device and to a computer program product.

Abstract: There is provided a biometric imaging system comprising a display panel. The display panel in turn comprises: a plurality of display pixels configured to emit visible light and controllable to form an image in the display; and a plurality of non-visible light emitting elements configured to emit linearly polarized non-visible light; a camera configured to receive polarized non-visible light having an orientation which is rotated with respect to the emitted linearly polarized light; and control circuitry configured to: activate the plurality of non-visible light emitting elements to emit linearly polarized light towards a biometric object; and control the camera to capture an image based on light reflected by the biometric object having a polarization which is rotated with respect to the emitted linearly polarized light.

Abstract: An acoustic biometric imaging system for acquiring a fingerprint representation, comprising: a device member; a transmitter transducer having a first fundamental mode resonance frequency, coupled to the device member; drive circuitry; a receiver transducer having a second fundamental mode resonance frequency, coupled to the device member; receiver circuitry; and processing circuitry configured to: control the drive circuitry to provide an electrical excitation signal to the transmit transducer resulting in fundamental mode oscillation of the transmit transducer with a frequency spectrum having a peak frequency being higher than the first fundamental mode resonance frequency and the second fundamental mode resonance frequency; receive, from the receiver circuitry, an electrical sensing signal indicative of an acoustic reflection signal; and determine the fingerprint representation based on the sensing signal received from the receiver circuitry.

Abstract: Mechanisms for requesting, by a client device, registration of identified data at a sensor reader. A request command is sent from the client device and to the sensor reader pertaining to a registration operation to be performed on identified data at the sensor reader. A security policy is assigned to the identified data by the sensor reader. A first security protected object and a second security protected object of the identified data are created by the sensor reader and based on the request command and the security policy. The second security protected object is sent, by the sensor reader, to the client device. The first security protected object is sent, by the sensor reader, towards the trusted server. The trusted server, upon reception of the first security protected object, verifies that the sensor reader that created the first security protected object has a security trusted relationship with the trusted server.