A banknote includes a security element with a processor and a memory. A private cryptographic key of an asymmetric key pair of the banknote is stored in a protected memory area of the memory. The asymmetric key pair is assigned to a banknote-specific blockchain address in a blockchain. A payment method executed with the banknote includes receiving a payment request for a payment with the banknote in the form of a transaction of an amount to be paid from the blockchain address of the banknote to a blockchain address of a payee, signing a transaction approval with the private cryptographic key of the banknote, and sending the signed transaction approval.

A jewelry article, and systems and methods for accessing human readable information printed or etched on the jewelry article are disclosed. The printed or etched human readable information included in the jewelry article cannot be viewed without a visual aid. The jewelry article includes a wireless or optical tag corresponding to the printed or etched human readable information. The wireless or optical tag is associated with an electronic file corresponding to the printed or etched human readable information. The wireless or optical tag is configured to be readable by an external reader connected to an external database that stores the electronic file corresponding to the printed or etched human readable information. The external reader is configured to read the wireless or optical tag to access the associated electronic file stored in the external database. Information included in the electronic file may be displayed on a display.

The object of this invention is a method for securing an electronic document. In particular, this invention relates to a method that prevents the forging of documents in which an electronic chip is incorporated. To that end, the invention proposes a method in which the data on the document medium are associated with a fingerprint of the document, so as to make them inseparable. That fingerprint is determined on the basis of measurable physical units of the electronic chip or the medium. Thus, the invention allows the combination of the physical protection of the document and the protection of the chip so as to reinforce the security of said documents.

The object of this invention is a method for securing an electronic document. In particular, this invention relates to a method that prevents the forging of documents in which an electronic chip is incorporated. To that end, the invention proposes a method in which the data on the document medium are associated with a fingerprint of the document, so as to make them inseparable. That fingerprint is determined on the basis of measurable physical units of the electronic chip or the medium. Thus, the invention allows the combination of the physical protection of the document and the protection of the chip so as to reinforce the security of said documents.

A hybrid document includes a document having visible markings, one or more light-controlling elements embedded in or on the document, and a controller including a circuit having a non-volatile memory. The controller is embedded in or on the document and electrically connected to the one or more light-controlling elements for controlling the one or more light-controlling elements. A power input connection is electrically connected to any one or all of the controller, the circuit, the memory, or the one or more light-emitting elements. The memory stores a state and the circuit causes the one or more light-controlling elements to indicate the state. A hybrid document validation machine is adapted to accept one or more of the hybrid documents, change the state of the hybrid documents, and optionally display the state on a display.

A wirelessly powered display comprises a substrate, an antenna with multiple turns disposed on the substrate, an electronic circuit disposed on the substrate, and one or more pixels each having one or more inorganic light-emitting diodes disposed on the substrate. The electronic circuit is electrically connected to the one or more inorganic LEDs and the antenna, the antenna is responsive to electromagnetic energy to provide electrical power, and the electronic circuit includes a power converter that converts a signal with a relatively high current and low voltage to a signal with a relatively high voltage and low current. A wirelessly coupled display system includes a device including a wireless power transmitter that provides wireless power within a specified range and one or more wirelessly powered displays located within the range and responsive to the wireless power provided by the device to display an image.

A hybrid currency banknote includes a banknote having visible markings. One or more light-controlling elements and a controller are embedded in or on the banknote. The controller is electrically connected to the one or more light-controlling elements to control the one or more light-controlling elements. A power input connection is electrically connected to the controller, or one or more light-controlling elements, or both. A power source can be connected to the power input connection, for example a piezoelectric or photovoltaic power source. In response to applied power, the controller causes the one or more light-controlling elements to emit light. A value can be stored in a memory in the controller and displayed by the light-controlling elements. The value can be assigned or varied by a hybrid currency teller machine.

The invention relates to a method for securing a document including a visual element, carried out by a processing unit comprising processing means, the method comprising generation, from the visual element, of a reference security datum, and storage of the reference security datum,

wherein the reference security datum is generated by means of an algorithm configured so as to generate: for any image acquired from the visual element, a security datum whereof the differences relative to the reference security datum are less than a determined threshold, and for any image acquired on a different visual element, a security datum whereof the differences relative to the reference security datum are greater than said threshold.

A method of authenticating and/or identifying a security article including a first image includes superimposing at least partially the first image of the article with a second image. The second image may be produced by an electronic imager. The method further includes performing a relative movement between the first and second images so as to make it possible to observe an item of information relating to authentication and/or identification of the security article during the relative movement between the first and second images.

A method of authenticating and/or identifying a security article including a first image includes superimposing at least partially the first image of the article with a second image. The second image may be produced by an electronic imager. The method further includes performing a relative movement between the first and second images so as to make it possible to observe an item of information relating to authentication and/or identification of the security article during the relative movement between the first and second images.