摘要:
A method of making a document, such as a check or stock certificate, having enhanced security against counterfeiting. The document includes a strip of foil having a three dimensional light diffracting image thereon affixed to the document. The strip of foil may be affixed to the document before or after the background printing or face printing of the document is completed. In this manner, the light diffracting strip may be printed on by the background and face printing of the document as desired.
摘要:
The present invention discloses a method of automatically decoding holographic signals by establishing an optical clock and performing subsequent optical signal analysis. In addition to a primary holographic image, the present invention comprises an optical image which generates a periodic pattern to create an optical clock for initializing the data reading device. By using a light source illuminating the optical image, diffraction signals are received by the detector(s). With a scanning (swiping) motion, signals of the optical clock and the primary image are read and the signals are processed and compared. The optical pattern can further be processed through an encryption algorithm and stored in a magnetic stripe, computer chip, hand held processor or a host computer for verification.
摘要:
An enhanced card security system wherein an optically readable portion is incorporated into the magnetic machine readable stripe on the card. The optically readable portion can include a holographic representation of a bar code or other conventionally known optical digit generator.The optical stripe has a partial string of an identification number and, the magnetic stripe has the remaining string of the identification number. A check digit derived by combining the two partial strings and preforming a check digit calculation on the complete string is also recorded on the magnetic stripe. Transactions are approved if during reading of the card the calculated check digit from combining the two strings matches the recorded check digit.
摘要:
A method of making a document, such as a check or stock certificate, having enhanced security against counterfeiting. The document includes a strip of foil having a three dimensional light diffracting image thereon affixed to the document. The strip of foil may be affixed to the document before or after the background printing or face printing of the document is completed. In this manner, the light diffracting strip may be printed on by the background and face printing of the document as desired.
摘要:
A method for placing tax stamps onto the bottoms of cigarette packs contained in a carton includes the steps of selecting a sheet of tax stamps having at least two rows and five columns thereby defining individual tax stamp units bearing tax indicia thereon, separating each of the units while simultaneously maintaining the spatial integrity of the columns and rows, transferring the units onto the cigarette packs contained in the carton, and affixing each of the units to the cigarette packs thereby establishing that the cigarette packs have been taxed by the proper taxing authority.
摘要:
A chip card, such as a financial transaction card, having first identifying data written in a read-only memory portion of circuitry contained in the card, wherein second and third identifying data are respectively coded in a machine readable optically variable device (e.g., a hologram) and a magnetic stripe on the card. The authenticity of the card is verified by combining these different identifying data; for example, the second and third identifying data may be combined to produce an algorithm which is compared with the first identifying data for authentication of the card.
摘要:
An identification card and method of manufacturing the same in which a holographic image is embossed on a clear polyester carrier which is then coated with ferrous oxide to form a magnetic strip with an optically viewable holographic image thereon. The strip is then mounted on a plastic substrate, and the carrier discarded.
摘要:
A method of manufacturing an identification card whereby information is printed on a sheet of plastic material. A raised pattern is formed on a different sheet of material to create a holographic image. The resultant raised pattern sheet is attached to the surface of the sheet of plastic material by pressure sensitive adhesive. The surface of the plastic material is overlaminated with a transparent layer to form a sandwich and heat and pressure is applied to fuse overlaminated layers. The pattern sheet has a high melting point so that the image is viewed as three-dimensional through an overlaminated layer.
摘要:
An information bearing credit or identification card in which pieces of a diffraction grating, preferably an embossed hologram, are randomly distributed in a plastic or paper card so that light reflecting therefrom uniquely and visually differentiates the grating and hence the card. The pieces may be mixed in the plastic pig or with the paper prior to rolling or sprinkled in the plastic or other substrate during rolling.