Abstract: The invention relates to a method for testing the authenticity of documents, in particular bank notes, documents of value or security documents, by authenticity criteria. To increase the reliability of authenticity testing of documents, at least two different authenticity classes each with one or more authenticity criteria are provided, the individual authenticity classes differing in at least one authenticity criterion. An authenticity class is selected from the different authenticity classes and the document tested by the authenticity criteria of the selected authenticity class. The document is assigned the selected authenticity class if the document meets the authenticity criteria thereof. This obtains higher reliability of authenticity testing since this method makes it possible to determine those documents that meet higher authenticity requirements, i.e. stricter authenticity criteria, than the other documents and are therefore authentic with higher probability.

Abstract: Ultraviolet light is used for checking the authenticity of sheet material, in particular bank notes, whereby the ultraviolet light transmitted, i.e., pervading the sheet material to be checked, is used for checking authenticity.

Abstract: For personalizing a portable data carrier (1), a selection device (8) of the data carrier (1) analyzes commands (23) which the data carrier (1) receives from a personalization device (20) within the framework of a personalization method. If the commands (23) are recognized by the selection device (8) as belonging to a certain personalization method, the selection device (8) activates that personalization interface (9) of the data carrier (1) that supports said personalization method. The automatic selection of one of a plurality of personalization interfaces (9) installed on the data carrier (1) permits a flexible personalization of the data carrier (1) independently of any proprietary personalization methods.

Abstract: The invention relates to a method, in which from two images of a security element, which are recorded with right-handed and left-handed circularly polarizing filters, a differential image is produced, on the basis of which the authenticity of the security element is tested, and an apparatus for carrying out the method.

Abstract: The present invention relates to a security element (20) for security papers, value documents and the like having a diffraction pattern that exhibits an embossed relief pattern (24, 26) and a coating layer (28, 32) that increases the visibility of the diffraction effect of the embossed relief pattern (24, 26). According to the present invention, the relief pattern (24, 26) is formed on the basis of a cholesteric liquid crystalline material (24) and the coating layer (28, 32) includes a reflective (28) and/or a high-index layer (32).

Abstract: A method is described for identifying and initializing digitized biometric features to provide encryption or coding of secret data.

Abstract: The present invention relates to a security arrangement (20-1, 20-2) for one of a plurality of homogeneous security documents (10-1, 10-2), having an authenticating feature (22-1, 22-2) that is characteristic for the security document and at least one verification element (24-1, 24-2) for checking the authenticating features (22-1, 22-2) of others of the plurality of homogeneous security documents, in which a damageless check of the authenticating feature (22-1) of a security arrangement (20-1) is practicable exclusively through a predefined combination effect with a verification element (24-2) of a security arrangement (20-2) disposed on another homogeneous security document (10-2).

Abstract: An apparatus for checking bank notes which scans the bank notes to be checked by means of a semiconductor array, including two linear semiconductor arrays formed of at least three layers which are sensitive to light of different wave-lengths, a first linear semiconductor array scanning the bank notes in a defined range of spectral sensitivity of the semiconductor (e.g. in the visible range), and a second linear semiconductor array scanning the bank notes in a range different therefrom (e.g. of invisible infrared light). From the signals of the two arrays a color image of the bank note and at least one image in the range of invisible light are obtained by suitable combination.

Abstract: A card laminate is produced from a centrally disposed foil laminate (1) consisting of an interior layer (2) with a metal layer (3) and with two exterior transparent plastic layers (4a, 4b), and two exterior plastic films (5a, 5b) of which at least the plastic film (5a) overlying the metal layer (3) is transparent and carries a print (6a). If the print (6a) is on the exterior, a transparent cover layer (7a) is furthermore provided. Materials and layer thicknesses are preferably selected symmetrically to the interior, metallized layer (2, 3) in order to reduce warping effects.

Abstract: In a bank note processing machine bank notes 100 are led through between two components of a checking device with the help of a conveyor belt. The conveyor belt is led away from the transport path and around the checking device with the help of deflection rollers. Coaxially to the deflection rollers are disposed clamping rings or clamping rollers, which grasp the sheet material and guide it through the checking device. This operation is supported by a guide plate, which combs with the clamping rings.

Abstract: The invention relates to a system for checking the security features of documents of value with at least one sensor in areas of different security categories. Since dependent on the security category different sensor parameters are made available for the respective checking of the security feature, so as to check the same security feature in different ways, the preparing of forgeries can be prevented particularly reliably.

Abstract: A card-shaped electronic data carrier, in particular chip card, has a card body (19) with a recess (21) located on a top side of the card (20), which accommodates a display (1). In a base surface (22) of the recess a reflection layer (23) is disposed. The recess (21) is formed in a multi-step fashion. The contact surfaces (6) of the display (1) are directed towards the base surface (22) of the recess (21) and rest against countercontact surfaces (26) on a step of the recess (21).

Abstract: The invention relates to a security element for security papers, bank notes, ID cards or the like, having at least one plastic layer on which at least two metal layers of different color are so disposed side by side and on the same side of the plastic layer that the different colors are visually checkable.

Abstract: The present invention relates to a security element (20) for security papers, value documents and the like, having a micro-optical moiré magnification arrangement having a motif image that consists of a periodic or at least locally periodic arrangement of a plurality of micromotif elements (28) that is planar or applied on a curved surface, and a periodic or at least locally periodic arrangement of a plurality of microfocusing elements (24) that is planar or applied on a curved surface, for moiré-magnified viewing of the micromotif elements (28) of the motif image, the arrangement of micromotif elements (28) and/or the arrangement of microfocusing elements (24) exhibiting, in the planar case, no symmetry axis in the plane of the arrangement in its periodic or at least locally periodic regions.

Abstract: In methods for determining, in a way that is protected against spying, the modular inverse b of a value a in relation to a module n for a cryptographic application, an auxiliary value ? and an auxiliary module ? are determined at least depending on the value a, the module n and at least one masking parameter r, an auxiliary inverse ?? is determined as the modular inverse of the auxiliary value ? in relation to the auxiliary module ?, and the modular inverse b is determined at least depending on the auxiliary inverse ??, the at least one masking parameter r, and the auxiliary value ? and/or the auxiliary module ?. A computer program product and a portable data carrier have corresponding features. The invention provides a method for modular inversion, secured against spying, which is suitable for applications where security is critical, such as, e.g. cryptographic calculations on a portable data carrier.

Abstract: The present invention relates to multi-ply security paper for manufacturing security or value documents, such as banknotes, identification cards and the like. Into a first paper ply (52) is introduced an endless security element (54) that is freely accessible on at least one side of the paper ply (52). The first paper ply (52) is covered on the freely accessible side of the security element (54) by a second paper ply (56), and the second paper ply (56) exhibits one or more openings (58) in the region of the security element (54).

Abstract: The invention relates to an apparatus used in a method for determining the limpness of sheet material, in particular of bank notes, wherein the sheet material is irradiated with sound waves, sound waves emanating from the sheet material are captured and the limpness of the sheet material is determined therefrom. An especially simple and reliable determination of limpness even independent of the degree of soiling of the sheet material can be achieved by measuring both the transmitted and the reflected sound waves and to form a mathematical ratio of the reflected and transmitted sound-waves, in order to determine the limpness.

Abstract: A method is provided for handling cassettes for bank notes, for automatic tellers and/or deposit devices. The method for handling cassettes for bank notes, for automatic tellers and/or deposit devices, includes the step of determining the filling level of the cassette or cassettes, comparing the determined filling level of each cassette with at least one threshold value lower than a maximum capacity of the particular cassette, and wherein, if the comparison yields an excess, the step of producing a signal indicating the exceeding of the threshold value, causing replacement of the cassette for which the signal indicating the exceeding of the threshold value was produced.

Abstract: A security document with a security element, wherein the security element includes at least partly a material that is optically changeable by an electric or magnetic field. In addition, a corresponding method for producing such a security document and a test method for testing such a security document are described.

Abstract: The invention relates to a data storage medium having a semiconductor chip which has at least one memory in which an operating program is stored which contains a number of commands, with each command producing signals which can be detected from outside the semiconductor chip. According to the invention the data storage medium is designed in order to split secret data, which is stored in the semiconductor chip in order to carry out security-relevant or safety-relevant operations or is generated by this semiconductor chip, into at least three data parts, with an arithmetic unit being included in order to calculate a random number and in order to divide the random number, with the first data part being the integer result of the division process, the second part being the remainder of the division process, and the third part being the random number itself.