Method and device for authenticating a tag
AssigneeAdvanced Track & Trace
InventorsJean-Pierre Massicot, Zbigniew Sagan, Alain Foucou
Life of this patent
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Abstract
A method for authenticating a tag, includes: a step (205) of capturing an image, with a communicating mobile terminal, of at least a portion of a tag having at least a portion of an identifier; a step (210) of transmitting the identifier to a server; a step (215) of reading, from a memory of tag images, the image of a tag having the identifier; a step (220) of transmitting, to the communicating mobile terminal, at least a portion of the image read from the memory; and a step (230) of displaying at least a portion of the transmitted image superimposed on an image captured by the terminal.
Claims15
A method for authenticating a current tag, the method comprising:
- capturing a current image, with a communicating mobile terminal, of at least a portion of the current tag, the captured current image comprising at least a portion of an identifier visible to the naked eye, printed on the tag, the identifier being disposed over at least two hologram elements or diffractive elements;
- transmitting the captured current image including said identifier to a server;
- reading, from a memory of tag images, a previously-stored image of a previously-captured tag having a same identifier as the identifier of the current tag;
- determining the distances of each hologram element or diffractive element to regularly-spaced positions on the previously-captured tag, at the server;
- comparing the determined distances to distances of each hologram element or diffractive element to regularly-spaced positions on the image captured by the terminal;
- transmitting, to said communicating mobile terminal, at least a portion of the previously-stored image read from the memory and the result of the comparison;
- and
- displaying at least a portion of the transmitted portion of the previously-stored image superimposed on the current image captured by said terminal, a superimposition image resulting from a superimposition of the current image and the transmitted portion of the previously-stored image on a point-to-point basis.
A device for authenticating a current tag by a communicating mobile terminal, the device comprising:
- an image capturing system configured to capture a current image of at least a portion of the current tag, the captured current image comprising at least a portion of an identifier visible to the naked eye, printed on the tag, the identifier being disposed over at least two hologram elements or diffractive elements;
- a transmitter configured to transmit the captured current image including said identifier to a server;
- a receiver configured to receive, from the server, at least a portion of a previously-stored image read from a memory of the server and a result of a comparison of (i) the distances of each hologram element or diffractive element to regularly-spaced positions on the previously-stored image of the tag determined at the server, to (ii) distances of each hologram element or diffractive element to regularly-spaced positions on the image captured by the terminal;
- and
- a display configured to display at least a portion of the transmitted portion of the previously-stored image superimposed on the current image captured by said terminal, a superimposition image resulting from a superimposition of the current image and the transmitted portion of the previously-stored image on a point-to-point basis.
Dependencies are inferred from the claim text.