Abstract:
A security mark (130) that comprises a metamaterial such that properties of the metamaterial provides authentication of the security mark (130). The metamaterial may have a negative refractive index. An article may be secured by applying the metamaterial to the article such that properties of the metamaterial authenticate the article. The metamaterial may be arranged to form an image (160) when illuminated by terahertz radiation.
Abstract:
Methods and systems for optical effects in pigments, inks, and on media. One aspect of this disclosure involves a pigment particle which includes a core, having a fluorescent material and having a spherical shape, and a shell surrounding the core; the shell includes a photochromic material which has a first optical property in a first light source and a second optical property in a second light source which includes a set of wavelengths not sufficiently present in the first light source. The second optical property attenuates an emitted radiation from the fluorescent material. Other aspects are also described.
Abstract:
A method of embedding an optical signature in a document and document produced therefrom. The optical signature is an optical pattern generated from a known value, such as a mathematical, geometric, trigonometric, size, phase, and the like, and the same value can be generated from examination of a document having the embedded optical pattern. The document can be validated, authenticated, or the determination of a valid copy of an original document with the embedded optical signature made through comparison of the known value and the value generated from the optical pattern on the document. The optical pattern can also be generated from other identification codes on the document.
Abstract:
A method and system for providing targeted content in a document. The method includes providing targeted content in a document, including: providing a user with a printed document, formatted to include information with content targeted to demographics of the user, the document having at least one user interactive element which enables the user to indicate a request for further information relating to the content by interacting with the element using a sensing device which is adapted to transmit data indicating the request to a computer system.
Abstract:
A sensing device for sensing region identity data and generating movement data when the sensing device is moved relative to a region of a surface, the region identity data being indicative of an identity of the region, the movement data being indicative of the movement of the sensing device relative to the region, the surface having disposed upon it coded data indicative of at least one region associated with the surface, the sensing device including: region identity sensing means configured to sense the region identity data using at least some of the coded data; motion sensing means configured to generate the movement data; and communications means configured to communicate the region identity data and the movement data to a computer system.
Abstract:
A method and system for presentation of information in a document to allow for personalization of content and user response. The method for presentation of information in a document, including: establishing personalized user content preferences; selecting and formatting information corresponding to the content preferences; and printing the formatted information in a document with at least one user interactive element which enables a user to indicate a response to associated information in the document by interacting with the element using a sensing device which is adapted to transmit response data to a computer system.
Abstract:
A method of distributing documents, via a communications network, to a plurality of receiving stations associated with a plurality of users. At least one document layout is pointcast to each receiving station, the document layout being associated with a predetermined user and defining one or more data objects such as text, images and graphics. Collections of shared data objects are then multicast, via the communications network, to the receiving stations on the basis of the respective users' document layouts. Each collection is only transmitted to those receiving stations whose users' document layouts include data objects in that collection.
Abstract:
A method and system for enabling user interaction with computer software running in a computer system. The user is provided with an interface surface containing information relating to the computer software and including coded data indicative of at least one interactive element relating to the computer software. A sensing device in the form of an optically sensing stylus contains identifying data indicative of an identity of the user. When the user writes with the stylus, or uses it as a pointer, an operative end of the stylus is brought into contact with the interface surface. The sensing device senses indicating data indicative of the at least one interactive element using at least some of the coded data. The computer system receives the identifying data and the indicating data from the sensing device. The interactive element is identified in the computer system using the indicating data, and user data is identified using the identifying data. The computer software is operated at least partly in reliance on the user data, and in accordance with instructions associated with the at least one interactive element.
Abstract:
A substrate on which a security document is to be printed. Said substrate having physically formed therein identification features which are invisible to the eye but are repetitive so as to be detectable by computer based equipment reading a document printed on said substrate.
Abstract:
Die Erfindung betrifft ein Verfahren zur Fälschungserkennung von Identifikationsdokumenten, die Datenfelder mit IR-absorbierenden personalisierten Daten enthalten, sowie ein dazugehöriges Computerprogramm oder computerlesbares Speichermedium. Das Verfahren umfasst die Schritte: (i) Auslesen eines Datenfeldes, das einen IR-absorbierenden personalisierten Datensatz enthält, mit einem IR-Lesegerät; (ii) Bestimmen einer Anzahl alphanumerischer Zeichen im ausgelesenen Datenfeld in einer Auswerteeinheit; und (iii) Bereitstellen eines Erwartungswerts für das Datenfeld, das den IR-absorbierenden personalisierten Datensatz enthält, in der Auswerteeinheit, wobei der Erwartungswert in Abhängigkeit von einer vorgegebenen Anzahl an Zeichen, die im Datenfeld zu erwarten sind, festgelegt ist oder zusätzlich eine Länge des ausgelesenen Datenfeldes bestimmt wird und anhand der Länge und einer vorgegebenen durchschnittlichen Zeichengröße eine maximale Anzahl an Zeichen berechnet wird, die im Datenfeld zu erwarten sind, und der Erwartungswert in Abhängigkeit von der berechneten maximalen Anzahl der Zeichen festgelegt ist; und (iv) Vergleich der bestimmten Anzahl an Zeichen mit dem Erwartungswert für dieses Datenfeld in der Auswerteeinheit und, für den Fall, dass die Anzahl der Zeichen den Erwartungswert überschreitet, Erzeugen eines Prüfsignals.