Abstract: A pyroelectric sensor includes several pixels distributed above a substrate and each pixel includes a first portion made of a pyroelectric material, in direct physical contact with a charge collection electrode, a second portion made of a pyroelectric material, in direct physical contact with a charge collection electrode, the first portion, the second portion and the at least one charge collection electrode being superposed above the substrate, at least one heating element to heat the first and second portions including a pyroelectric material, and an electronic device to measure a difference between charges generated by the first portion including a pyroelectric material and charges generated by the second portion including a pyroelectric material. The pyroelectric sensor makes it possible to suppress a useless part of a measurement signal. It is particularly advantageous for taking an image of a papillary print.

Abstract: The invention relates to an electronic card comprising a card body (1) comprising an upper surface (11) and a lower surface (12); a fingerprint sensor (2) flush with the upper surface of said card body; a tactile mark (3) placed on the upper surface of the card body near the fingerprint sensor, said tactile mark having an excess thickness from the upper surface of the card to guide, when said mark is touched, a correct positioning of a finger on said fingerprint sensor, the thickness of the tactile mark being such that the card has a thickness compatible with standard ISO 781 ID1, the thickness of the tactile mark preferably being between 30 and 60 ?m, typically 50 ?m.

Abstract: A control method is provided. The method includes, before the individual or group of individuals presents at the control point, initializing a control protocol of each individual, including retrieving freshly acquired biometric datum from each individual; extracting metadata associated with each datum; verifying the coherence of the extracted metadata; and comparing each freshly acquired biometric datum retrieved with a set of biometric reference data stored in a control server, so as to ascertain whether a controlled individual belongs to a list of individuals of interest; and when the individual or group of individuals presents at the control point: finalizing the control protocol of each individual and if either authentication and/or verification fails, subjecting the individual or the group of individuals to more intense scrutiny, and if both authentication and verification pass, authorizing the individual or the group of individuals to cross the control point.

Abstract: Method for detecting attempted fraud by using an artificial material during a biometric acquisition, including: illuminating, with lighting, a surface of an object having a texture, acquiring a first image of the surface; illuminating, with non-uniform lighting, the surface and acquiring a second image of the surface, the non-uniform lighting causing light to diffuse within the illuminated material at an intensity that varies according to a law that is a function of a first position parameter and is invariable along a second position parameter; computing a correction, varying along the first position parameter, that is to be locally applied to the first image to bring the amplitude of the texture on the first image substantially to the level of that on the second image; generating, on the basis of the correction, information relating to the artificial or non-artificial nature of the material.

Abstract: A functional program stored in a memory area of an electronic card may be protected against an attack by disturbance of electrical origin intended to modify at least one logic state of at least one code of this program. The method may include: a storage step during which codes of the functional program and codes of a check program intended to check the logical behavior of the functional program are stored in the memory of the card; and a step of executing at least one code of the functional program followed by a step of checking the logic states of the functional program by executing the check program. During the storage step, the codes of the check program are stored in a memory area formed by addresses that are defined so that the attack by disturbance of electrical origin has no influence on the logic states of this program.

Abstract: A device for use in identifying or authenticating a subject positioned in an acquisition volume on the basis of at least one biometric characteristic of the subject, the device including in succession, in offset manner along a camera placement axis: a first camera; a second camera; and a third camera; the optical axes of the first and second cameras forming between them an angle strictly less than 10°, and the optical axis of the third camera intersecting the optical axes of the first and second cameras, the optical axes of the first and second cameras each forming an angle less than or equal to 5° relative to a normal axis perpendicular to the camera placement axis.

Abstract: A method for calibrating an ionizing radiation detector, with the aim of determining a correction factor in order to establish an amplitude-energy correspondence. The invention first relates to a method for calibrating a device for detecting ionizing radiation, the detector comprising a semiconductor or scintillator detection material capable of generating a signal S of amplitude A upon interaction between ionizing radiation and the detection material, the method including the determination of a weighting factor at the amplitude A.

Abstract: A device for capturing imprints of a body part on-the-fly, including a stand which includes a region of free space through which a user may pass a body part. When in this zone, the body part is simultaneously illuminated by a light source that produces a uniform illumination of the body part and a sight-projecting module that projects a sight onto the body part, and an image of the body part thus illuminated is acquired by the image-acquiring module. The capturing device is able to model the variations in light intensity of the projection of the sight on the body part by determining parameters of a preset parametric mathematical model, and generate a synthetic image of said projection on the basis of said model and using parameters determined beforehand. The synthetic image is then subtracted from the acquired image in order to obtain a sight-free image of the body part.

Abstract: Provided is a method of detecting fraud during use of a device for capturing an imprint of a body part using a principle of total internal reflection with dark field and including a transparent plate on which a body part to be verified is placed. The method includes: using the device to acquire a first imprint image with a lighting of the body part such that the whole surface of the body part in contact with the transparent plate returns light; using the device to acquire a least one second imprint image by illuminating the body part with a single LED; obtaining for each second imprint image an item of information representative of a light level re-emitted by the body part by using each image obtained; and comparing each item of information obtained with a reference item of information to validate that the body part is a true body part.

Abstract: A compact device for capturing an imprint of a body part working by total reflection with dark background.

Abstract: Optical imaging device comprising: an array of substantially point light sources, an array of photo-detectors interlaced with the array of light sources, an optical medium of thickness greater than the pitch of the photo-detectors and forming capture and detection surfaces, means for successively switching on and off each of a part of the light sources and reading a part of the photo-detectors receiving rays coming from the switched on source and having undergone reflection against the detection surface while forming an angle of incidence estimated as a function of the optical medium and the element to image.

Abstract: Provided is a method for verifying the veracity of a finger by a verification device including a projection device projecting a pattern of parallel lines orthogonal to the longitudinal direction of the finger, a capture device capturing an image of the finger and of the pattern, and a processing unit. The method includes: an illumination step in which the projection device illuminates the finger with the pattern; a contactless capture step in which the capture device captures a pattern image of the projected pattern; a fringe-extraction step in which the processing unit extracts fringes from the pattern image; a feature-calculation step in which the processing unit calculates a feature relating to the physical structure of the fringes; a comparison step during which the processing unit compares the calculated feature with reference values; and a decision-making step in which the processing unit makes a decision regarding the veracity of the finger.

Abstract: A method and device for verifying the validity of an electronic document is provided. A device for capturing images and capturing a sequence of images displayed by a device for presenting the electronic document is activated. The sequence of images may include different two-dimensional barcodes displayed successively one after the other, where the two-dimensional barcodes represent a signature of the electronic document and parts of the electronic document. The two-dimensional barcodes are decoded, and the validity of the signature is verified by means of a public key. A message representing the result of the verification is generated.

Abstract: Method for verifying data generated by an electronic device included in equipment, the electronic device including a computing unit, a one-time programmable memory and a volatile memory, the equipment including a rewritable non-volatile memory and a communication bus enabling the electronic device to store data in the rewritable non-volatile memory. The method includes: creating a secured channel by encryption between the equipment and a server; obtaining an authentication key from the server; loading data and a message authentication code from the rewritable non-volatile memory to the volatile memory, the message authentication code obtained by the electronic device from the authentication key and said data prior to the storage of said data and message authentication code in the rewritable non-volatile memory, the electronic device not having kept the authentication key following the obtaining of the message authentication code; verifying said data using the secret key and the message authentication code.

Abstract: The invention relates to a method and system for supplying a token in a host card emulation system comprising first and second devices and a secure payment platform, the method comprises the steps of transfer by the second device to the first device an identifier of the second device, reception by the second device of a first token and an identifier of the second device, the first token being a symmetrical derivation of a second token of the first device with the identifier of the second device, transfer by the second device of a message comprising a cryptogram signed with the first token, the identifier of the first device and predetermined information indicating that the first token has been transferred by a third party.