Patent ID: 9685021
Date: 2017-06-20
CPC Classifications: G06K,G07D,G07F,G07G,H04N

Claim:
1. A method for using a point-of-sale scanner, the method comprising: capturing, with the point-of-sale scanner, an infrared image of a bar code associated with an item for sale while the passage of ultraviolet light is blocked; determining if the item for sale is associated with use of a counterfeit bill of currency offered as payment for the item for sale; configuring an ultraviolet filter mounted within a point-of-sale scanner to allow the passage of ultraviolet light within; illuminating the bill of currency with ultraviolet light emitted from the point-of-sale scanner; capturing, with the point-of-sale scanner while the passage of ultraviolet light is allowed, an image of the bill of currency that includes a fluorescent response to the ultraviolet light; comparing a size, a shape, a position, and a wavelength of the fluorescent response to known factors for the bill of currency stored in a database on a remote computer; and determining if the bill of currency is authentic based on a presence or absence of the fluorescent response and the comparison of the size, the shape, the position, and the wavelength of the fluorescent response to the known factors for the bill of currency stored in the database on the remote computer.