Optically-based methods and apparatus for performing...

Details Optically-based methods and apparatus for performing... Optically-based methods and apparatus for performing...

G - Physics

07

D

G07D 7/12 (2006.01) B42D 15/10 (2006.01)

Patent

CA 2286901

A method for authenticating a document (10). The method includes the steps of: (a) providing a document (10) to be authenticated; (b) illuminating at least a portion (12) of the document with laser light (14) that exceeds a threshold fluence; (c) detecting (16) a narrow band laser-like emission of at least one wavelength from the document in response to the step of illuminating (14); and (d) declaring the document to be authentic only if the laser-like emission is detected.

Procédé servant à authentifier un document (10). Ce procédé consiste à (a) prendre un document (10) à authentifier; (b) éclairer au moins une partie (12) du document avec une lumière laser (14) dépassant un seuil de fluence; (c) détecter (16) une émission de type laser à bande étroite d'au moins une longueur d'onde depuis le document en réaction à l'étape d'éclairage (14); (d) établir l'authenticité du document seulement si l'émission de type laser a été détectée.

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