US 12,468,919 B2
Gift card having coin reactive ink and other tamperproof properties
Christopher Brakob, Minneapolis, MN (US)
Assigned to Target Brands, Inc., Minneapolis, MN (US)
Filed by Target Brands, Inc., Minneapolis, MN (US)
Filed on Nov. 8, 2024, as Appl. No. 18/941,375.
Claims priority of provisional application 63/626,311, filed on Jan. 29, 2024.
Prior Publication US 2025/0245472 A1, Jul. 31, 2025
Int. Cl. G06K 19/18 (2006.01); G06K 19/06 (2006.01)
CPC G06K 19/18 (2013.01) [G06K 19/06028 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A gift card comprising:
a first identifier printed in permanent and visible ink on a first portion of the gift card, wherein attempting to remove the first identifier causes visible indicators of tampering on the first portion of the gift card, wherein the first portion of the gift card is treated with one or more chemicals to cause the visible indicators of tampering thereon;
a second identifier printed in a matrix of ink dots on a second portion of the gift card that, as printed, obscure the second identifier, wherein the matrix comprises reactive ink dots and other non-reactive ink dots that, as printed, have a same visible appearance, wherein the second identifier is represented by the reactive ink dots, wherein the reactive ink dots are configured to have a different visible appearance from the non-reactive ink dots when the matrix is rubbed by a physical object, wherein rubbing the matrix with the physical object is configured to cause the reactive ink dots and the non-reactive ink dots to have the different physical appearances so that the second identifier becomes visible; and
tamperproof properties applied in one or more layers to the first and second portions of the gift card, and wherein the tamperproof properties are configured to cause modifications to the first or second portions of the gift card to become permanently visible.