Abstract: A biometric sensor module for detecting a biometric feature of a user comprises: a biometric sensor comprising an array of sensing elements for acquiring sensing signals indicative of a biometric feature of a user, the array of sensing elements arranged facing towards a front side of the biometric sensor. Further, the biometric sensor module comprises a bottom flexible film attached to a back side, opposite the front side, of the biometric sensor. The bottom flexible film can carry at least one electrically conductive line electrically connectable to the biometric sensor and electrically connectable to an external electrical circuit. The biometric sensor module further comprises a top film attached to the biometric sensor closer to the front side of the biometric sensor than the bottom flexible film. The flexible film includes a bent portion such that the flexible film is bent towards the top film.

Abstract: A biometric imaging device characterized by comprising: an image sensor comprising a plurality of pixels forming a photodetector pixel array; a first aperture layer comprising openings in locations aligned with pixels of the pixel array; a first filter layer comprising a transparent material configured to block light within a predetermined first wavelength range; a transparent spacer layer arranged on the first filter layer, wherein the transparent spacer layer is configured to absorb light within a predetermined second wavelength range; and an array of microlenses arranged on the transparent spacer layer, wherein the microlenses are aligned with the openings in the aperture layer.

Abstract: A fingerprint sensor comprising a plurality of electrically conductive sensing structures arranged in a sensing plane for capacitively sensing a fingerprint of a finger placed on the finger receiving surface of the fingerprint sensor arrangement, the plurality of electrically conductive sensing structures including: a first set of electrically conductive sensing structures, each sensing structure in the first set of electrically conductive sensing structures covering an area in the sensing plane being within a first area range; and a second set of electrically conductive sensing structures, each sensing structure in the second set of electrically conductive sensing structures covering an area in the sensing plane being within a second area range only including areas greater than the areas within the first area range.

Abstract: The present disclosure relates to a fingerprint sensing system and a method performed by the fingerprint sensing system of verifying that setting data of a fingerprint sensor of the fingerprint sensing system has not been modified. In aspect, a method performed by a fingerprint sensing system of verifying that setting data of a fingerprint sensor of the fingerprint sensing system has not been modified is provided. The method comprises blocking access to the fingerprint sensor setting data held in a storage of the fingerprint sensing system, acquiring from the fingerprint sensor a representation of the fingerprint sensor setting data to be utilized upon capturing a fingerprint image, and verifying from the acquired representation if the fingerprint sensor setting data corresponds to fingerprint sensor setting data that previously was written to the storage.

Abstract: An ultrasonic biometric imaging device comprising: a cover structure having an exposed outer surface, wherein at least a portion of the exposed outer surface forms a sensing surface of the ultrasonic biometric imaging device; and a plurality of ultrasonic transducers attached to an edge portion of the cover structure and configured to emit an ultrasound wave into the cover structure; the cover structure further comprising a reflection reducing layer arranged at a bottom surface of the cover structure, wherein the reflection reducing layer is configured to reduce an amplitude of ultrasonic wave reflections at the bottom surface of the cover structure.

Abstract: The present disclosure relates to a method of amending a fingerprint template for a user of a smart card, where the user of the smart card is progressively enrolling based on comparison and/or using a separate credential such as a PIN code. The present disclosure also relates to a corresponding smart card and to a computer program product.

Abstract: The present invention relates to an optical biometric sensor (100) comprising: an image sensor (302) comprising an array (301) of photodetectors (304), wherein for acquiring sensing signals, the image sensor is controllable to sequentially start exposure of subsets (306, 308, 309) of photodetectors; and a timing circuitry (310) configured to control the start of exposure of a subset of photodetectors based on a present data transfer capacity on a data transfer bus (312) configured to transfer data indicative of the acquired sensing signals from the optical biometric sensor to a host device (314).

Abstract: Method for determining image reconstruction parameters in an optical biometric imaging device comprising a plurality of microlenses forming a microlens array and an image sensor arranged to receive light having passed through the microlenses, the method comprising: by the image sensor, capturing a plurality of sub-images together representing an image of a biometric object in contact with a sensing surface of the biometric imaging device, each sub-image corresponding to a respective microlens; and determining a demagnification factor based on at least a subset of the plurality of sub-images.

Abstract: The present invention relates to an optical biometric sensor comprising: a read-out circuitry controllable for converting analog sensing signals to digital signals, the analog sensing signals being indicative of an image acquired by an image sensor comprising an array of photodetectors; and a timing circuitry configured to control the read-out circuitry to provide digital signals based on a present data transfer capacity on a data transfer bus configured to transfer data indicative of the digital signals from the optical biometric sensor to a host device.

Abstract: A method of manufacturing a fingerprint sensor component having a component outline for integration into an electronic device, the method comprising the steps of: providing a fingerprint sensor package having a sensing surface, a connection surface opposite the sensing surface, and sides connecting the sensing surface and the connection surface, the connection surface having connectors for allowing electrical connection of the fingerprint sensor component to the electronic device; arranging the fingerprint sensor package on a temporary carrier with the connection surface facing the temporary carrier; and adding material at least around the sides of the fingerprint sensor package, while leaving the connection surface of the fingerprint sensor package uncovered.

Abstract: A fingerprint sensor comprising a plurality of electrically conductive sensing structures arranged in a sensing plane for capacitively sensing a fingerprint of a finger; and measurement circuitry coupled to the plurality of electrically conductive sensing structures for providing measurement signals indicative of a capacitive coupling between each sensing structure in the plurality of electrically conductive sensing structures and the finger, wherein the measurement circuitry is arranged to: provide, using a first measurement circuitry configuration, a first set of measurement signals from a first set of sensing structures; and provide, using a second measurement circuitry configuration different from the first measurement circuitry configuration, a second set of measurement signals from a second set of sensing structures.

Abstract: The present invention relates to an optical biometric sensor comprising: a read-out circuitry controllable for converting analog sensing signals to digital signals, the analog sensing signals being indicative of an image acquired by an image sensor comprising an array of photodetectors; and a timing circuitry configured to control the read-out circuitry to provide digital signals based on a present data transfer capacity on a data transfer bus configured to transfer data indicative of the digital signals from the optical biometric sensor to a host device.

Abstract: The present invention relates to a method for producing a biometric image using an optical biometric imaging arrangement including a set of micro lenses adapted to redirect incoming light onto a photodetector pixel array, the method comprising: capturing a biometric image including a set of sub-images using an optical biometric imaging device; estimating a spatial transformation between the at least one biometric sub-image and corresponding masking calibration sub-images; applying the spatial transformation to retrieved illuminance calibration sub-images adapted for illuminance calibration for captured biometric sub-images to align the illuminance calibration sub-images with the biometric image; and normalizing the biometric sub-images using the aligned calibration sub-images for providing a normalized biometric image based on the normalized biometric sub-images.

Abstract: The present invention relates to an optical biometric sensor comprising: an image sensor comprising an array of photodetectors, wherein for acquiring sensing signals, the image sensor is controllable to sequentially start exposure of subsets of photodetectors; and a timing circuitry configured to control the start of exposure of a subset of photodetectors based on a present data transfer capacity on a data transfer bus configured to transfer data indicative of the acquired sensing signals from the optical biometric sensor to a host device.

Abstract: A method for controlling a plurality of ultrasonic transducers in a fingerprint sensing system that comprises a cover plate having a sensing surface configured to be touched by a finger, and a plurality of ultrasonic transducers located at the periphery of the cover plate and configured to transmit an acoustic signal propagating in the cover plate, receive an ultrasonic signal having interacted with an object in contact with the sensing surface, and to determine properties of the object based on the received ultrasonic signal. The method comprises: in response to a first input, controlling the plurality of transducers such that at least a portion of the sensing surface has a first feature detection resolution; and in response to a second input, controlling the plurality of transducers such that at least a portion of the sensing surface has a second feature detection resolution, different from the first feature detection resolution.

Abstract: A biometric device comprising: biometric sensing circuitry; cryptographic circuitry; a device key area in the biometric device for storing a cryptographic device key unique to the biometric device; and a test key area in the biometric device, for storing a cryptographic test key. The biometric device is controllable between: a test state in which the test key area is connected to the cryptographic circuitry to provide the test key to the cryptographic circuitry, and the cryptographic circuitry is prevented from performing cryptographic operations on data provided by the biometric sensing circuitry; and a functional state in which the device key area is connected to the cryptographic circuitry to provide the device key to the cryptographic circuitry, and the cryptographic circuitry is connected to the biometric sensing circuitry to receive and perform cryptographic operations on data from the biometric sensing circuitry using the device key.

Abstract: The invention relates to an ultrasonic biometric imaging system comprising: a cover structure having a touch surface; a plurality of ultrasonic transducers arranged at a periphery of the touch surface; a plurality of mixed-signal integrated circuits configured to: AD-convert a received analog echo-signal to form a digital echo signal for each active ultrasonic transducer in the subset of ultrasonic transducers; perform local beamforming by introducing a first controllable delay to each digital echo signal to form a plurality of delayed echo signals; and sum the delayed echo signals to form an intermediate signal. The biometric imaging system further comprises a host processor connected to each of the plurality of mixed-signal integrated-circuits and configured to: receive intermediate signals from the of mixed-signal integrated-circuits; perform global beamforming by introducing a second controllable delay to each intermediate signal; and sum the delayed intermediate signals to form a final echo signal.

Abstract: Systems and methods for optical imaging are disclosed. An optical sensor for imaging a biometric input object on a sensing region includes a transparent layer having a first side and a second side opposite the first side; a set of apertures disposed above the first side of the transparent layer; a first set of reflective surfaces disposed below the second side of the transparent layer configured to receive light transmitted through the first set of apertures and to reflect the received light; a second set of reflective surfaces disposed above the first side of the transparent layer configured to receive the light reflected from the first set of reflective surfaces and to further reflect the light; and a plurality of detector elements positioned to receive the further reflected light from the second set of reflective surfaces.

Abstract: There is provided a fingerprint sensor module comprising: a fingerprint sensor device comprising a plurality of sensing elements for acquiring an image of a finger placed on a sensing surface of the sensor module. The sensor device comprises a trench at an edge of the fingerprint sensor device, the trench comprising electrically conductive connection pads for connecting the sensor device to external circuitry. The module further comprises a substrate comprising an electrically conductive trace and an electric component arranged on the substrate and in electrical contact with the conductive trace. The substrate is electrically and mechanically connected to the edge trench such that an electrical connection is formed between the sensor device and the electrical component of the substrate via the conductive trace. There is also provided a method for manufacturing the described module.

Abstract: The invention relates to methods and devices for updating encrypted biometric data of a user at a trusted network node. In an aspect of the invention a method performed by a first client device is provided of updating encrypted biometric data of a user, the encrypted biometric data to be updated having been previously captured by the first client device and registered at a trusted network node. The invention relates to methods and devices for updating encrypted biometric data of a user at a trusted network node. In an aspect of the invention a method performed by a first client device is provided of updating encrypted biometric data of a user, the encrypted biometric data to be updated having been previously captured by the first client device and registered at a trusted network node.